Section: Human Geography

36) Pioneer farmers settling the grasslands of the American West often built houses of sod, while early settlers of the eastern forest built wooden structures like log cabins. This suggests that building materials:

are chosen because of the diffusion of popular culture
are commonly imported long distance because of local folk culture
are more scarce in the East than in the West
are strongly influenced by local resources

Explanation

These illustrative examples show that building materials are strongly influenced by local resources.