Final answer:
The American Colonization Society was established to promote the colonization of free African Americans in Africa as a means to address racial tensions in the United States.
Step-by-step explanation:
The American Colonization Society (ACS) was founded in 1816 with the goal of promoting the colonization of free African Americans in Africa. One of the main reasons for the establishment of the ACS was the belief that colonization in Africa would help to address racial tensions within the United States. The idea was that by removing free African Americans from the country, it would alleviate racial prejudice and create a more harmonious society.