According to Wegener’s hypothesis of continental drift, the continents do not move

Earth is slowly cooling and shrinking

the continents were once joined together in a single landmass

Earth’s surface is made up of seven major landmasses

Alfred Wegener proposed that the continents were once united into a single supercontinent named Pangaea, meaning all earth in ancient Greek. He suggested that Pangaea broke up long ago and that the continents then moved to their current positions. He called his hypothesis continental drift

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the second significant cause of the great migration was the desire of black southerners to escape segregation, known euphemistically as jim crow. rural african american southerners believed that segregation - and racism and prejudice against blacks - was significantly less intense in the north.