Expanding Markets and Moving West 293
Robert E. Lee was born into a prominent Virginia family in
1807. His father had been a hero of the American Revolution.
In 1846, the war with Mexico provided the 39-year-old captain
with his first combat experience. Among the soldiers whom
Lee directed in battle was his younger brother, Sidney Smith
Lee. The elder Lee wrote about the battle.
A PERSONAL
VOICE ROBERT E. LEE
No matter where I turned, my eyes reverted to [my brother],
and I stood by his gun whenever I was not wanted elsewhere.
Oh, I felt awfully, and am at a loss what I should have done
had he been cut down before me. I thank God that he was
saved. . . . [The service from the American battery] was terrif-
ic, and the shells thrown from our battery were constant and
regular discharges, so beautiful in their flight and so destruc-
tive in their fall. It was awful! My heart bled for the inhabi-
tants. The soldiers I did not care so much for, but it was terrible
to think of the women and children.
—a letter cited in R. E. Lee by Douglas Southall Freeman
In recoiling at the ugliness of the war with Mexico, Lee hardly stood alone.
From the start, Americans hotly debated whether the United States should pursue
the war.
Polk Urges War
Hostilities between the United States and Mexico, which had flared during the
Texas Revolution in 1836, reignited over the American annexation of Texas in
1845. The two countries might have solved these issues peaceably if not for the
continuing instability of the Mexican government and the territorial aspirations
of the U.S. president, James K. Polk.
Terms & Names
Terms & Names
MAIN IDEA
MAIN IDEA
One American's Story
The War with Mexico
James K. Polk
Zachary Taylor
Stephen Kearny
Republic of
California
Winfield Scott
Treaty of
Guadalupe
Hidalgo
Gadsden
Purchase
forty-niners
gold rush
Tensions over the U.S.
annexation of Texas led to
war with Mexico, resulting in
huge territorial gains for the
United States.
The United States has achieved
its goal of expanding across the
continent from east to west.
WHY IT MATTERS NOW
WHY IT MATTERS NOW
Robert E. Lee
followed his father
into a military
career, graduating
from the new U.S.
Military Academy
at West Point.
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Page 1 of 7
A
Polk now believed that war with Mexico would bring not only Texas
but also New Mexico and California into the Union. The president
supported Texas’s claims in disputes with Mexico over the Texas-
Mexico border. While Texas insisted that its southern border extended
to the Rio Grande, Mexico insisted that Texas’s border stopped at the
Nueces River, 100 miles northeast of the Rio Grande.
SLIDELL’S REJECTION
In 1844, Santa Anna was ousted as Mexico’s
president. The Mexican political situation was confusing and unpre-
dictable. In late 1845, “Polk the Purposeful” sent a Spanish-speaking
emissary, John Slidell, to Mexico to purchase California and New
Mexico and to gain approval of the Rio Grande as the Texas border.
When Slidell arrived, Mexican officials refused to receive him. Hoping
for Mexican aggression that would unify Americans behind a war, Polk
then issued orders for General Zachary Taylor to march to the Rio Grande and
blockade the river. Mexicans viewed this action as a violation of their rights.
Many Americans shared Polk’s goals for expansion, but public opinion was
split over resorting to military action. Slavery would soon emerge as the key issue
complicating this debate.
SECTIONAL ATTITUDES TOWARD WAR
The idea of war unleashed great pub-
lic celebrations. Volunteers swarmed recruiting stations, and the advent of daily
newspapers, printed on new rotary presses, gave the war a romantic appeal.
Not everyone cheered. The abolitionist James Russell Lowell considered the
war a “national crime committed in behoof of slavery, our common sin.” Even
proslavery spokesman John C. Calhoun saw the perils of expansionism. Mexico,
he said, was “the forbidden fruit; the penalty of eating it would be to subject our
institutions to political death.”
Many Southerners, however, saw the annexation of Texas as an opportunity
to extend slavery and increase Southern power in Congress. Furthermore, the
Wilmot Proviso, a proposed amendment to a military appropriations bill of 1846,
prohibited slavery in lands that might be gained from Mexico. This attack on
slavery solidified Southern support for war by transforming the debate on war
into a debate on slavery.
Northerners mainly opposed the war. Antislavery Whigs and abolitionists saw
the war as a plot to expand slavery and ensure Southern domination of the
Union. In a resolution adopted by the Massachusetts legislature, Charles Sumner
proclaimed that “the lives of Mexicans are sacrificed in this cause; and a domes-
tic question, which should be reserved for bloodless debate in our own country,
is transferred to fields of battle in a foreign land.”
The War Begins
As Taylor positioned his forces at the Rio Grande in 1845–1846, John C. Frémont
led an exploration party through Mexico’s Alta California province, another vio-
lation of Mexico’s territorial rights. The Mexican government had had enough.
Mexico responded to Taylor’s invasion of the territory it claimed by sending
troops across the Rio Grande. In a skirmish near Matamoros, Mexican soldiers
killed 9 U.S. soldiers. Polk immediately sent a war message to Congress, declaring
that by shedding “American blood upon American soil,” Mexico had started the
war. Representative Abraham Lincoln questioned the truthfulness of the message,
asking “whether our citizens, whose blood was shed, as in his message declared,
were or were not, at that time, armed officers and soldiers, sent into that settle-
ment by the military order of the President.” Lincoln introduced a “Spot
Resolution,” asking Polk to certify the spot where the skirmish had occurred.
294 C
HAPTER 9
MAIN IDEA
MAIN IDEA
A
Analyzing
Efects
How did the
issue of slavery
affect the debate
over the war with
Mexico?
A. Answer
Northerners
opposed war,
seeing it as a
way to extend
slavery to Texas.
Many southern-
ers favored war
for the same
reason.
James Polk, also
known as “Polk
the Purposeful”
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Page 2 of 7
C
B
Truthful or not, Polk’s message
persuaded the House to recognize a
state of war with Mexico by a vote of
174 to 14, and the Senate by a vote of
40 to 2, with numerous abstentions.
Some antislavery Whigs had tried to
oppose the war but were barely
allowed to gain the floor of Congress
to speak. Since Polk withheld key
facts, the full reality of what had hap-
pened on the distant Rio Grande was
not known. But the theory and prac-
tice of manifest destiny had launched
the United States into its first war on
foreign territory.
KEARNY MARCHES WEST
In 1846,
as part of his plan to seize New
Mexico and California, Polk ordered
Colonel Stephen Kearny to march
from Fort Leavenworth, Kansas, across
the desert to Santa Fe, New Mexico.
Kearny earned the nickname “the
Long Marcher” as he and his men
crossed 800 miles of barren ground.
They were met in Santa Fe by a New
Mexican contingent that included
upper-class Mexicans who wanted to
join the United States. New Mexico
fell to the United States without a
shot being fired. After dispatching
some of his troops south to Mexico,
the Long Marcher led the rest on
another long trek, this time to south-
ern California.
THE REPUBLIC OF CALIFORNIA
By the turn of the 19th century, Spanish set-
tlers had set up more than 20 missions along the California coast. After indepen-
dence, the Mexican government took over these missions, just as it had done in
Texas. By the late 1830s, about 12,000 Mexican settlers had migrated to California
to set up cattle ranches, where they pressed Native Americans into service as
workers. By the mid-1840s, about 500 U.S. settlers also lived in California.
Polk’s offer to buy California in 1845 aroused the indignation of the
Mexican government. A group of American settlers, led by Frémont, seized the
town of Sonoma in June 1846. Hoisting a flag that featured a grizzly bear, the
rebels proudly declared their independence from Mexico and proclaimed the
nation of the Republic of California. Kearny arrived from New Mexico and
joined forces with Frémont and a U.S. naval expedition led by Commodore
John D. Sloat. The Mexican troops quickly gave way, leaving U.S. forces in con-
trol of California.
THE WAR IN MEXICO
For American troops in Mexico, one military victory fol-
lowed another. Though Mexican soldiers gallantly defended their own soil, their
army labored under poor leadership. In contrast, U.S. soldiers served under some
of the nation’s best officers, such as Captain Robert E. Lee and Captain Ulysses S.
Grant, both West Point graduates.
Expanding Markets and Moving West 295
This 19th-century
wood engraving
shows Colonel
Stephen Kearny
capturing Santa
Fe, New Mexico.
MAIN IDEA
MAIN IDEA
B
Analyzing
Causes
How did
President Polk
provoke Mexico to
attack U.S.
forces?
MAIN IDEA
MAIN IDEA
C
Analyzing
Motives
How do
Kearny’s actions
support the idea
of manifest
destiny?
B. Answer
Polk purposely
ordered
American sol-
diers to invade
territory that
Mexico claimed
as its own;
when Mexico
attacked, Polk
quickly claimed
that Mexico had
started the war.
C. Answer
Kearny was
acting on the
principle that
U.S. expansion
west was
inevitable.
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Page 3 of 7
The American invasion of Mexico lasted about a year and featured a pair of
colorful generals, Zachary Taylor and Winfield Scott. Affectionately nicknamed
“Old Rough and Ready” because he sported a casual straw hat and plain brown
coat, Taylor attacked and captured Monterrey, Mexico, in September 1846, but
allowed the Mexican garrison to escape.
Meanwhile, Polk hatched a bizarre scheme with Santa Anna, who had been
living in exile in Cuba. If Polk would help him sneak back to Mexico, Santa Anna
promised he would end the war and mediate the border dispute. Polk agreed, but
when Santa Anna returned to Mexico, he resumed the presidency, took com-
mand of the army and, in February 1847, ordered an attack on Taylor’s forces at
Buena Vista. Though the Mexican army boasted superior numbers, its soldiers suf-
fered from exhaustion. Taylor’s more rested troops pushed Santa Anna into
Mexico’s interior.
Scott’s forces took advantage of Santa Anna’s failed strategy and captured
Veracruz in March. General Scott always wore a full-dress blue uniform with a yel-
low sash, which won him the nickname “Old Fuss and Feathers.” Scott supervised
an amphibious landing at Veracruz, in which an army of 10,000 landed on an
296 C
HAPTER 9
PACIFIC
OCEAN
Gulf of
Mexico
30°N
20°N
110°W
90°W
T
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o
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.
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e
d
R
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v
e
r
El Paso
Santa Fe
Albuquerque
Las Vegas
San Antonio
Corpus
Christi
New
Orleans
Matamoros
Mazatlán
Saltillo
San Luis Potosi
Los Angeles
San Francisco
Fort Leavenworth
Bent's Fort
Sacramento
Feb. 28, 1847
Chihuahua
Mar. 1–Apr. 28,
1847
San Pasoual
Dec. 6, 1846
El Brazito
Dec. 25, 1846
Mexico City
Sept. 14, 1847
Veracruz
Mar. 9–29, 1847
Tampico
Nov. 15, 1846
Monterrey
Sept. 20–24, 1846
Monterey
July 7, 1846
Buena Vista
Feb. 22–23, 1847
Churubusco,
Aug. 20, 1847
K
e
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r
n
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c
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oat
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k
t
o
n
MEXICO
N
S
E
W
U.S. victory
Mexican victory
U.S. forces
Mexican forces
Acquired by U.S. in Texas
annexation of 1845
Acquired by U.S. in Treaty of
Guadalupe Hidalgo, 1848
Acquired by U.S. in Gadsden
Purchase, 1853
0
0 200 400 kilometers
200 400 miles
GEOGRAPHY SKILLBUILDER
1.
Location From which locations
in Texas did U.S. forces come to
Buena Vista?
2.
Region In which country were
most of the battles fought?
War with Mexico, 1846–1848
MEXICO
UNITED STATES
BRITISH NORTH AMERICA
MEXICO
OREGON
TERRITORY
UNITED STATES
BRITISH NORTH AMERICA
UNITED STATES, 1830
UNITED STATES, 1853
Skillbuilder
Answers
1. San Antonio,
Corpus Christi,
El Paso.
2. Mexico.
p0293-299aspe-0309s4 10/16/02 4:05 PM Page 296
Page 4 of 7
D
island off Veracruz in 200 ships and ferried 67 boats in less
than 5 hours. Scott’s troops then set off for Mexico City,
which they captured on September 14, 1847. Covering 260
miles, Scott’s army had lost not a single battle.
America Gains the Spoils of War
For Mexico, the war in which it lost at least 25,000 lives and
nearly half its land marked an ugly milestone in its rela-
tions with the United States. America’s victory came at the
cost of about 13,000 lives. Of these, nearly 2,000 died in
battle or from wounds and more than 11,000 perished from
diseases, such as yellow fever. However, the war enlarged
U.S. territory by approximately one-third.
THE TREATY OF GUADALUPE HIDALGO
On February 2,
1848, the United States and Mexico signed the Treaty of
Guadalupe Hidalgo. Mexico agreed to the Rio Grande
border for Texas and ceded New Mexico and California to
the United States. The United States agreed to pay $15 mil-
lion for the Mexican cession, which included present-day
California, Nevada, New Mexico, Utah, most of Arizona,
and parts of Colorado and Wyoming. The treaty guaran-
teed Mexicans living in these territories freedom of reli-
gion, protection of property, bilingual elections, and open
borders.
Five years later, in 1853, President Franklin Pierce
would authorize his emissary James Gadsden to pay Mexico
an additional $10 million for another piece of territory
south of the Gila River. Along with the settlement of
Oregon and the Treaty of Guadalupe Hidalgo, the Gadsden
Purchase established the current borders of the lower 48 states.
TAYLOR’S ELECTION IN 1848
In 1848 the Democrats nominated Lewis Cass
for president and hesitated about the extension of slavery into America’s vast new
holdings. A small group of antislavery Democrats nominated Martin Van Buren
to lead the Free-Soil Party, which supported a congressional prohibition on the
extension of slavery into the territories. Van Buren captured 10 percent of the
popular vote and no electoral votes. The Whig nominee, war hero Zachary Taylor,
easily won the election. Taylor’s victory, however, was soon overshadowed by a
glittering discovery in one of America’s new territories.
The California Gold Rush
In January 1848, James Marshall, an American carpenter working on John Sutter’s
property in the California Sierra Nevadas, discovered gold at Sutter’s Mill. Word
of the chance discovery traveled east.
THE RUSH BEGINS
Soon after the news reached San Francisco, residents trav-
eled to the Sacramento Valley in droves to pan for gold. Lacking staff and readers,
San Francisco’s newspaper, the Californian, suspended publication. An editorial
in the final issue, dated May 29, complained that the whole country “resounds
with the sordid cry of gold, GOLD, GOLD! while the field is left half-plowed, the
house half-built, and everything neglected but the manufacture of shovels and
pickaxes.”
Expanding Markets and Moving West 297
LOS NIÑOS HÉROES
Though most Americans know
little about the war with Mexico,
Mexicans view the war as a
crucial event in their history.
On September 14, 1847,
General Winfield Scott captured
Mexico City after the hard-fought
Battle of Chapultepec, the site of
the Mexican military academy.
There, six young cadets leaped
from Chapultepec Castle to com-
mit suicide rather than surrender
to the U.S. Army. A monument
(shown above) that honors los
Niños Héroes (the boy heroes)
inspires pilgrimages every
September.
ANOTHER
P
E
R
S
P
E
C
T
I
V
E
P
E
R
S
P
E
C
T
I
V
E
MAIN IDEA
MAIN IDEA
D
Summarizing
Explain the
importance of
the Treaty of
Guadalupe Hidalgo
and the Gadsden
Purchase.
D. Answer
Together with
the settlement
of the Oregon
question, the
Treaty of
Guadalupe
Hidalgo and the
Gadsden
Purchase set-
tled the bound-
aries of main-
land United
States.
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Page 5 of 7
E
Analyzing
Analyzing
“THE WAY THEY GO TO
CALIFORNIA”
This cartoon lithograph by Nathaniel
Currier (1813–1888) was inspired by
the California gold rush. Currier was a
founder of the Currier and Ives compa-
ny, which became famous for detailed
lithographs of 19th-century daily life.
Here Currier portrays some of the
hordes of prospectors who flocked from
all over the world to California in 1849.
The mob wields picks and shovels, des-
perate to find any means of transport to
the “Golden West.” While some miners
dive into the water, weighed down by
heavy tools, one clever prospector has
invented a new type of airship to speed
him to the treasure.
SKILLBUILDER
Analyzing Political Cartoons
1.
How has the cartoonist added humor
to this portrayal of the gold seekers?
2.
What clues tell you that this cartoon
is about the California gold rush?
SEE SKILLBUILDER HANDBOOK,
PAGE R24.
On June 6, 1848, Monterey’s Mayor Walter Colton sent a scout to report on
what was happening. After the scout returned on June 14, the mayor described
the scene that had taken place in the middle of the town’s main street.
A PERSONAL VOICE WALTER COLTON
The blacksmith dropped his hammer, the carpenter his plane, the mason his
trowel, the farmer his sickle, the baker his loaf, and the tapster his bottle. All
were off for the mines. . . . I have only a community of women left, and a gang of
prisoners, with here and there a soldier who will give his captain the slip at first
chance. I don’t blame the fellow a whit; seven dollars a month, while others are
making two or three hundred a day!
—quoted in California: A Bicentennial Histor y
As gold fever traveled eastward, overland migration to California skyrocketed,
from 400 in 1848 to 44,000 in 1850. The rest of the world soon caught the fever.
Among the so-called forty-niners, the prospectors who flocked to California in
1849 in the gold rush, were people from Asia, South America, and Europe.
IMPACT OF GOLD FEVER
Because of its location as a supply center, San Francisco
became “a pandemonium of a city,” according to one traveler. Indeed, the city’s
population exploded from 1,000 in 1848 to 35,000 in 1850. Ferrying people and
supplies, ships clogged San Francisco’s harbor with a forest of masts.
Louisa Clapp and her husband, Fayette, left the comforts of a middle-class
family in New England to join the gold rush for adventure. After living in San
Francisco for more than a year, the Clapps settled in a log cabin in the interior
298 C
HAPTER 9
MAIN IDEA
MAIN IDEA
E
Comparing
What common
dreams did people
who sought gold in
California share
with those who
settled in Oregon?
E. Answer
In both cases,
settlers rushed
to settle a terri-
tory where they
envisioned
bright economic
opportunity.
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Page 6 of 7
mining town of Rich Bar. While her
husband practiced medicine, Louisa
tried her hand at mining and found it
hardly to her liking.
A PERSONAL VOICE
LOUISA CLAPP
I have become a mineress; that is, if
having washed a pan of dirt with my
own hands, and procured therefrom
three dollars and twenty-five cents in
gold dust . . . will entitle me to the
name. I can truly say, with the black-
smith’s apprentice at the close of his
first day’s work at the anvil, that ‘I am
sorry I learned the trade;’ for I wet my
feet, tore my dress, spoilt a pair of
new gloves, nearly froze my fingers,
got an awful headache, took cold and
lost a valuable breastpin, in this my
labor of love.
—quoted in They Saw the Elephant
GOLD RUSH BRINGS DIVERSITY
By 1849, California’s population exceeded
100,000. The Chinese were the largest group to come from overseas. Free blacks
also came by the hundreds, and many struck it rich. By 1855, the wealthiest
African Americans in the country were living in California. The fast-growing pop-
ulation included large numbers of Mexicans as well. The California demographic
mix also included slaves—that is until a constitutional convention in 1849 drew
up a state constitution that outlawed slavery.
California’s application for statehood provoked fiery protest in Congress and
became just one more sore point between irate Northerners and Southerners, each
intent on winning the sectional argument over slavery. Nevertheless, California
did win statehood in 1850.
Expanding Markets and Moving West 299
James K. Polk
Zachary Taylor
Stephen Kearny
Republic of California
Winfield Scott
Treaty of Guadalupe Hidalgo
Gadsden Purchase
forty-niners
gold rush
1. TERMS & NAMES For each term or name, write a sentence explaining its significance.
MAIN IDEA
2. TAKING NOTES
Draw a chart showing how the
boundaries of the contiguous United
States were formed.
How did the United States pursue
its goal of expanding in the 1840s?
CRITICAL THINKING
3. EVALUATING
How would you evaluate President
Polk’s attitude and behavior toward
Mexico? Use specific references to
the chapter to support your
response. Think About:
Polk’s position on expansion
his actions once in office
his relationship with Santa Anna
4. ANALYZING EFFECTS
What were some of the effects of
the California gold rush?
5. EVALUATING DECISIONS
Would you have supported the
controversial war with Mexico? Why
or why not? Explain your answer,
including details from the chapter.
Present-Day U.S. BordersEffect:
Causes:
These miners are
prospecting in
Spanish Flat,
California, in
1852.
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