Final answer:
Plate tectonics explains the movement of continents and continental drift, originating from Alfred Wegener's theory in 1912.
Explanation:
Plate tectonics is the model that helps us understand the Earth's development and structure, including continental drift. Alfred Wegener proposed the theory of continental drift in 1912, suggesting that all present-day landmasses were once part of a supercontinent called Pangaea. These continents have since moved apart due to plate tectonics.
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