In 1912 German meteorologist Alfred Wegener proposed that all the continents were once joined in a single landmass, which he called Pangaea. Wegener relied on geological evidence and fossil records to support his theory that the landmass gradually separated through continental drift. In the 1960s researchers confirmed Wegener’s theory when they observed seafloor spreading and other phenomena. This research eventually led to the theory and study of plate tectonics.
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