Who were the first people to use burial mounds like kolomoki?

The first people to use burial mounds like Kolomoki were the Native Americans of the Woodland period, particularly the people associated with the Southeast, including the Mississippian culture. These mounds were built for various purposes, including burial and ceremonial functions, reflecting the social and spiritual beliefs of the community. Kolomoki, located in present-day Georgia, is one of the largest and most well-known archaeological sites from this period, showcasing elaborate burial practices and earthworks.