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Business and industries in the 1920's most closely followed the buying demands of a) the government b)farmers c)consumers d)manufactures

How was the method of making pottery by using coils of clay better than simply shaping the clay by hand? it prevented pottery from cracking when fired. it created a watertight seal. it produced more attractive pottery. the pottery could be cut or stamped with designs.

World war 2 was caused, in part, by which of these factors?