The Wichitas built dome-shaped houses known as "grass houses." These structures were made from a framework of wooden poles covered with grass, reeds, and sometimes clay, providing insulation and protection from the elements. The design was well-suited for their semi-nomadic lifestyle and the climate of the Southern Plains. The houses were typically organized around a central fire pit, reflecting the community's social and cultural practices.
The Chinook used cedar wood to build their houses.
mammoth
Not answerable - you need to specify who "they" are, and where "they" live.
longhouses, huts, teepees, wigwams, and caves.
logs
The largest Anasazi houses, at the peak of their civilization, were built of stone, adobe bricks, and tuff. (A type of stone)
wood and animal skin
The type of bone used to build early houses is called "boning." It is typically made from the rib bones of large animals, such as whales or mammoths, and was commonly used in construction during prehistoric times.
it is really oak wood trust me
Depending on the location you have to build a house in the mountains, almost any type of house will work. Multi-level houses are often built to follow the contour of the mountain. The slope of the land and stability of the site can make a difference on the type of house you build.
Whichever type are built in their community. Colonials are popular I believe, but people can also build their own.
The houses that you would build in the Mangroves of Assam would be ones build on stilts. This is done to protect the property from flooding.