Tribes in Africa, Polynesia, along with North and South American Indians once lived in grass shacks, tee pees, mud huts or slept out in the open.

• 非洲，波利尼西亚的部落以及美洲北部和南部的印第安人居住在草屋、圆顶帐篷和泥棚里或露天而睡。