A major purpose of the Lewis and Clark expedition of 1804 was to explore which of the following?

The primary purpose of the Lewis and Clark expedition of 1804 - 1806 was to search for a water route across North America from the Atlantic to the Pacific. This was the stated purpose of the expedition in President Jefferson's written instruction to Lewis and Clark. the other purpose, such as befriending the Native Americans and cataloging flora and fauna, were secondary.

answer; /// i do believe that its napolean's conquest of spain;