Meriwether Lewis and William Clark claimed Great Plains and Pacific Northwest.
Explanation:
The purchase of Louisiana has doubled the size of the United States and is expansion towards west.
Meriwether Lewis and William Clark led an expedition to mark the territory of Louisiana.
Lewis is best known for his efforts to produce, in the early 19th century, a map of the new Western Territory, obtained through the purchase of Louisiana from France.
His expeditions with William Clark paved the way for future expansion westward, and after that trip, President Thomas Jefferson appointed Lewis as governor of Louisiana territory.
Class: History
Level: Middle school
Keywords: Louisiana,Meriwether Lewis, William Clark
