USA HISTORY

Detailed explanation-1: -After the Louisiana Purchase Treaty was made, Jefferson initiated an exploration of the newly purchased land and the territory beyond the “great rock mountains” in the West. He chose Meriwether Lewis to lead an expedition, who in turn solicited the help of William Clark.

Detailed explanation-2: -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-3: -The Lewis and Clark Expedition began in 1804, when President Thomas Jefferson tasked Meriwether Lewis with exploring the lands west of the Mississippi River that comprised the Louisiana Purchase. Lewis chose William Clark as his co-leader for the mission.

Detailed explanation-4: -Among these men were Meriwether Lewis and William Clark, co-leaders of an expedition tasked with exploring land that the United States had recently acquired.