Important Event
Key People
Land Purchases
Native American Impact
Transportation & Technology
100

This 1803 deal doubled the size of the U.S.

Louisiana Purchase

100

He explored the new territory gained from the Louisiana Purchase.

Meriwether Lewis

100

This territory was acquired peacefully from France in 1803.

Louisiana Territory

100

This act forced Native Americans off their land in the 1830s.

Indian Removal Act

100

This animal was crucial for plains travel before railroads.

horse

200

The year gold was discovered in California, sparking mass migration.

1848

200

She helped guide the Lewis and Clark expedition.

Sacagawea

200

The U.S. gained this large area from Mexico in 1848.

Mexican Cession

200

The forced march of the Cherokee is known as this.

Trail of Tears

200

These covered wagons were used by pioneers heading west.

Conestoga wagons

300

This belief justified U.S. expansion across North America.

Manifest Destiny

300

He coined the term "Manifest Destiny."

John O'Sullivan

300

The U.S. annexed this independent republic in 1845.

Texas

300

These were created to contain and control Native populations.

reservations

300

The invention that allowed boats to go upstream

steamboat

400

This act gave settlers 160 acres of land for a small fee and work.

Homestead Act

400

President during the Mexican-American War.

James K. Polk

400

The U.S. and Britain peacefully divided this Pacific Northwest land.

Oregon Country

400

Famous Sioux leader at the Battle of Little Bighorn.

Sitting Bull

400

Completed in 1869, it connected the east and west by rail.

Transcontinental Railroad

500

This war resulted in the U.S. gaining much of the Southwest.  

Mexican American War

500

Leader of the Mormons who moved his people to Utah.

Brigham Young

500

This southern strip of land was purchased from Mexico in 1853.

Gadsden Purchase

500

This 1890 massacre marked the end of major Native resistance.

Wounded Knee Massacre

500

This invention helped farmers plow tough soil on the Great Plains.

steel plow

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