Add Yahoo as a preferred source to see more of our stories on Google. The Louisiana Purchase changed the trajectory of U.S. expansion in the beginning of the 19th century, allowing the size of the ...

The "Bought for A Song: A Young Nation Expands" exhibit will be on display until July 11.

History calls this moment the Louisiana Purchase. For the U.S., it meant doubling in in size. For the world, it meant the ...

Relates the history of the Louisiana Purchase to the westward expansion of the United States, describing events leading to the purchase of the territory and its exploration, settlement and importance.

The Louisiana Purchase changed the trajectory of U.S. expansion in the beginning of the 19th century, allowing the size of the country to grow by 530,000,000 acres. And at only a cost to the U.S. of ...