Westward Expansion
SOL USI.8a: The student will demonstrate knowledge of
westward expansion and reform in America from 1801 to
1861 by: a) describing territorial expansion and how it
affected the political map of the United States, with emphasis
on the Louisiana Purchase, the Lewis and Clark expedition,
and the acquisitions of Florida, Texas, Oregon, and
California.
Westward Expansion
1. Between 1801 and 1861, EXPLORATION
was encouraged as America underwent
vast territorial EXPANSION.
New Territories Added to the United States
Between 1801 and 1861: The Louisiana
Purchase, 1803
1. Jefferson bought land from FRANCE (the
Louisiana Purchase), which doubled the
size of the United States.
2. In the Lewis and Clark expedition,
Meriwether Lewis and William Clark
explored the Louisiana Purchase from the
MISSISSIPPI RIVER to the PACIFIC
OCEAN
The Louisiana Purchase
New Territories Added to the United States
Between 1801 and 1861: Florida, 1819
1. Spain gave Florida to
the United States
through A TREATY
New Territories Added to the United States
Between 1801 and 1861: Texas, 1845
1. Texas was added
after it became an
INDEPENDENT
REPUBLIC
“Remember the Alamo!”
Texas Territory Added
New Territories Added to the United States
Between 1801 and 1861: Oregon, 1846
1. The Oregon Territory was divided by the United
States and GREAT BRITAIN
New Territories Added to the United States
Between 1801 and 1861: California, 1848
1. War with MEXICO resulted in California and the
southwest territory becoming part of the United
States.
The war with Mexico began as
“The Bear Flag Uprising”.
American settlers declared
California a Republic and
caused war with Mexico.
Later, the “Bear Flag” became
the state flag of California.
California/Southwest Territory
For Review