(PLS HELP) How did the expedition of lewis and clark influence john astor?
A. Astor saw a way to make a profit building trading posts along the route.
B. Astor provided lewis and clarks maps to trappers for a large profit.
C. Astor believed he could raise money by providing guides along the route.
D. Astor wanted to claim land for the united states by building trading posts along the route.