What is something that the day of independence of Mexico and the Fourth of July have in common

Why have some historians rejected the labels bc and ad as laels for periods in world history

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.

What is one way that the congress of vienna changed the map of europe?