Supporters of Manifest Destiny believed: A. it was important avoid conflicts with European countries.
B. they should respect the rights of American Indians.
C. the United States should remain the same size.
D. the United States was meant to extend to the Pacific Ocean.

D.

Explanation:

The supporters of Manifest Destiny believed that it was their destiny and right by God and history to expand. Taking lands from non-European Americans was justified because they were spreading liberty to the lands and the natives were racially unfit to hold the lands.

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.

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