Seminoles continued their distinctive life, such as "clan-based matrilocal residence in scattered thatched-roof chickee camps." Today, the Florida Seminole proudly note the fact that their ancestors were never conquered. In the 20th century before World War II, the Seminole in Florida divided into two groups; those who were more traditional and those willing to adapt to the reservations. Those who accepted reservation lands and made adaptations achieved federal recognition in 1957 as the Seminole Tribe of Florida. Those who had kept to traditional ways and spoke the Mikasuki language organized as the Miccosukee Tribe of Indians of Florida, gaining state recognition in 1957 and federal recognition in 1962. (See also Miccosukee Tribe of Indians of Florida, below.) With federal recognition, they gained reservation lands and worked out a separate arrangement with the state for control of extensive wetlands. Other Seminoles not affiliated with either of the federally recognized groups are known as Traditional or Independent Seminoles. At the time the tribes were recognized, in 1957 and 1962, respectively, they entered into agreements with the US government confirming their sovereignty over tribal lands. The Seminole worked hard to adapt, but they were highly affected by the rapidly changing American environment. Natural disasters magnified changes from the governmental drainage project of the Everglades. Residential, agricultural and business development changed the "natural, social, political, and economic environment" of the Seminole. In the 1930s, the Seminole slowly began to move onto federally designated reservation lands within the region. The US government had purchased lands and put them in trust for Seminole use. Initially, few Seminoles had any interest in moving to the reservation land or in establishing more formal relations with the government. Some feared that if they moved onto reservations, they would be forced to move to Oklahoma. Others accepted the move in hopes of stability, jobs promised by the Indian New Deal, or as new converts to Christianity. Beginning in the 1940s, however, more Seminoles began to move to the reservations. A major catalyst for this was the conversion of many Seminole to Christianity, following missionary effort spearheaded by the Creek Baptist evangelist Stanley Smith. For the new converts, relocating to the reservations afforded them the opportunity to establish their own churches, where they adapted traditions to incorporate into their style of Christianity. Reservation Seminoles began forming tribal governments and forming ties with the Bureau of Indian Affairs. In 1957 the nation reorganized and established formal relations with the US government as the Seminole Tribe of Florida. The Seminole Tribe of Florida is headquartered in Hollywood, Florida.