Complex sentence: Fort Walton Culture was a mound-building Native American culture that flourished near Ft. Walton Beach, Florida in the southeastern United States from approximately 1100 ~ 1550 CE. It is named for the Fort Walton Mound site near Ft. Walton Beach.
Split into simpler sentences: Fort Walton Culture was a mound-building Native American culture that flourished near Ft. Walton Beach, Florida in the southeastern United States. The Fort Walton Culture existed approximately 1100 ~ 1550 CE. It is named for the Fort Walton Mound site near Ft. Walton Beach.