What was not a factor that encouraged settlement of the west in the late 1800s? a)growth of railroads

b)peace with native americans

c)free or cheap land

d)discoveries of gold, silver, and copper

i need to see the questions able to answer sorry

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.