Final answer:
The expedition that Sacagawea was part of was led by Meriwether Lewis and William Clark, commissioned for exploration post Louisiana Purchase.
Step-by-step explanation:
The leaders of the expedition that Sacagawea joined were Meriwether Lewis and William Clark. This expedition, known as the Lewis and Clark Expedition, was a significant journey of exploration that took place during 1804-1806.
Commissioned by Thomas Jefferson following the Louisiana Purchase, their mission was to explore the newly acquired western territory of the United States, seeking potential trade routes and documenting the region's geography, indigenous populations, flora, and fauna.
Although Sacagawea's role wasn't that of a guide, her contributions as an interpreter and diplomat were invaluable, particularly in interactions with the Shoshone people.
Furthermore, the inclusion of Sacagawea, then a young woman with an infant, often served to signal peaceful intentions to the tribes the expedition encountered.
Learn more about Lewis and Clark Expedition