Which of the following anti-slavery groups attempted to transport free blacks in the united states to liberia in africa?

a. united states abolition society
b. american anti-slavery society
c. society for relief of free negroes held in bondage
d. american colonizing society

the united states didn't wanted to get involve with other countries probelms

which time period is this? or is this story fictional, i'm going to need more info to answer this question

explanation:

the addition to geographic boundaries that might have  kept the people of the huang river civilization from traveling to far distance region is that they had learned about the other river valley civilizations but feared contact would bring invasion.

hope this .

plz give me brainliest!