Question

before the expedition got under way in 1804, what important development changed the shape and size of the United States and made Lewis and Clark's journey even more important?

Answer 1

the Louisiana Purchase.

Step-by-step explanation:

sorry if im wrong

Answer 2

Answer: Lewis was 28 years old, Clark 32. Before the expedition got under way in 1804, what important development changed the shape and size of the United States and made Lewis and Clark's journey even more important? the Louisiana Purchase.