USA HISTORY

Detailed explanation-1: -Students will learn that the United States purchased the Louisiana Territory in 1803 and President Thomas Jefferson sent Lewis and Clark to explore west of the Mississippi River in 1804-though the land was already inhabited and politically complicated.

Detailed explanation-2: -Lewis and Clark Expedition (1804–06) was a U.S. military expedition, led by Captain Meriwether Lewis and Lieutenant William Clark, to explore the Louisiana Purchase and the Pacific Northwest.

Detailed explanation-3: -Meriwether Lewis commanded the expedition jointly with William Clark. Jefferson instructed them to seek new trade routes, to establish relations with the western tribes of American Indians, and to report on the geography, geology, astronomy, zoology, botany, and climate of the West.

Detailed explanation-4: -In the spring of 1804, Lewis, Clark, and dozens of other men left St. Louis, Missouri, by boat. They traveled westward through what is now Missouri, Iowa, Nebraska, and South Dakota. In November they reached Knife River Village in present-day North Dakota.