Final answer:
The vast majority of African Americans in the United States are affiliated with Protestant denominations, particularly Baptist churches which are predominant in the South's Bible Belt.
Step-by-step explanation:
The vast majority of African Americans in the United States identify with Protestant denominations. This demographic includes members of churches such as Baptist, Methodist, Pentecostal, and others. In terms of regional popularity, Baptist churches are particularly prevalent in the South, a region traditionally known as the Bible Belt due to its dense concentration of churches and a more literal interpretation of the Bible. This religious affiliation is strongly reflected in the African American community.
It is important to note that while the Catholic Church also has a significant following in the United States, more African Americans are affiliated with Protestant denominations. Additionally, although there is a growing segment in the U.S. for other religious practices and non-affiliation, the tradition of Protestantism remains deeply embedded within the African American culture.