What were the economic, political, social and scientific changes that brought the world to the brink of a second world war?

Most goods that came into ancient rome traveled by what?

What impact did new technologies in the assembly and manufacturing have on the auto industry in the 1920s

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.