maybe just out of wood or large rocks
They used ADOBE.
In the plains, pioneers often built houses using materials readily available in their environment, primarily wood and sod. Many constructed sod houses, or "soddies," which were made from layers of grass and soil, providing insulation and durability. In wooded areas, log cabins were common, while some used adobe or stone in regions where those materials were accessible. These structures were designed to withstand the harsh weather conditions of the plains.
Houses in hills have sloping roofs to prevent rain and snow to collect and make the house cold and damp as houses in plains are built by concrete and other strong building materials
Dwellings on the plains made of mud are typically called adobe houses or mud brick houses. These structures are constructed using a mixture of clay, sand, straw, and water, which is then shaped into bricks and left to dry in the sun. The use of mud as a building material is practical in regions where it is abundant and provides good insulation against extreme temperatures.
3 regions. till plains, south eastern plains, and the great plains.
The five regions of Texas are the Gulf Coast Plains, the Prairie Plains, the Great Plains, the Rolling Plains, and the Basin and Range.
because it is easy to make houses in the plain and also roadways,railways,etc.
The main land regions of Nebraska are the Dissected Till Plains in the east, the Great Plains in the central region, and the High Plains in the west. These regions are characterized by their varying elevations, soil types, and topography.
coastal plains,central plains,great plains,and mountains
Highveld, Lowveld, Middleveld, Coastal plains and the Escarpment, that seperates the first three from the Coastal plains.
Houses in Terai regions (between the Plains and the Siwaliks) , and konkan coasts of Goa and Mangalore have high amounts of high-fall during monsoons. Therefore, houses here have slopping roof so that the water drains away on its own.
the central plains,coastal plains, mountain and basin, and the high plains!