Final answer:
President Jefferson sent out an expedition team led by Captain Meriwether Lewis and Lieutenant William Clark to explore the newly acquired Louisiana Territory.
Step-by-step explanation:
President Jefferson sent out an expedition team led by Captain Meriwether Lewis and Lieutenant William Clark. This expedition, known as the Lewis and Clark Expedition, was sent to explore the newly acquired Louisiana Territory. Jefferson wanted them to accomplish several purposes, including mapping the territory, exploring the Missouri River and its tributaries, establishing trade routes, and gathering information about the region's geography, plant life, animals, and resources. They were also tasked with finding a waterway, called the Northwest Passage, that would connect the Mississippi River to the Pacific Ocean, although they did not find it. Overall, their expedition was significant in expanding American knowledge of the western lands.