After the UAT captured prisoners, the UAT decided to make production on materials. They decided to make the American Tribal Bunker. In the UAT, they used trade instead of buying and selling. The workers who are building this project are being given a "discount" on trade, like free items. They carved the dirt and stone with shovels and pickaxes. Then they made the inner walls out of Tungsten, Iron, Stone, and bricks. Then they putted stuff inside the large interiors of the place. Like an arsenal of weapons and supplies, and an HQ where UAT leaders meet.