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

b B, it was important avoid conflicts with eropean countries

Explanation:

there has only been 12 presidents. the 12th president is/was moon jae-in

the main reason the us senate rejected the treaty of versailles was because "european nations wanted to punish germany"

d(:

me and mark as brainliest.