Based on Source 1, which statement best explains why the Lewis and Clark expedition was important to Thomas Jefferson?
A
Jefferson wanted to strengthen his role as commander in chief by conquering western territories.
B
Jefferson saw western expansion as an opportunity for both political and economic development of the United States.
C
Jefferson hoped to learn about the culture and technology of Native Americans across the continent.
D
Jefferson needed to prove that the territory the United States had recently purchased was worth the expense.
B
Jefferson saw western expansion as an opportunity for both political and economic development of the United States.