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Louisiana Purchase
Louisiana Purchase is bought by President Thomas Jefferson to expand U.S. -
Indian Removal Act
Congress passes a law to move Native Americans from the Southeast to the west of the Mississippi River -
Westward Trails
over 300,000 people travel west on each of the three westward trails, Oregon, Santa Fe, and Mormon -
Texas becomes a state
Texas becomes part of U.S., leading to the Mexican-American War -
gold is discovered
James Marshall discovers gold at Sutter's Mill making even more people travel west -
Yellowstone becomes a national park
Yellowstone National Park dedicated to be 1st national park by President Ulysses S. Grant -
more gold discovered
gold is discovered in Black Hills of South Dakota
