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 Clark's 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.

the answer is a, salt plain

when world war i broke out across europe in 1914, president woodrow wilson proclaimed the united states would remain neutral, and many americans supported this policy of nonintervention. however, public opinion about neutrality started to change after the sinking of the british ocean liner lusitania by a german u-boat in 1915; almost 2,000 people perished, including 128 americans. along with news of the zimmerman telegram threatening an alliance between germany and mexico, wilson asked congress for a declaration of war against germany. the u.s. officially entered the conflict on april 6, 1917.

it allows shippers to carry commercial goods, which allows them to save time and money.