The Seminoles are a Native American people who developed in Florida in the 18th century. Today, they live in Oklahoma and Florida, and comprise three federally recognized tribes: the Seminole Nation of Oklahoma, the Seminole Tribe of Florida, and the Miccosukee Tribe of Indians of Florida, as well as independent groups. The Seminole people emerged in a process of ethnogenesis from various Native American groups who settled in Spanish Florida beginning in the early 1700s, most significantly northern Muscogee Creeks from what is now Georgia and Alabama.
Old crafts and traditions were revived in both Florida and Oklahoma in the mid-20th century as the Seminole began seeking tourism dollars from Americans traveling along the new interstate highway system. In the 1970s, Seminole tribes began to run small bingo games on their reservations to raise revenue. They won court challenges to initiate Indian gaming on their sovereign land, which many U.S. tribes have adopted to generate revenues for welfare, education, and development.

Resource: https://en.wikipedia.org/wiki/Seminole