Answer:-
The theory of continental drift, proposed by Alfred Wegener in 1912, suggests that Earth’s continents were once a single landmass called Pangaea and have since drifted apart. He believed continents move slowly over geological time due to forces within Earth. His theory was supported by fossil evidence, geological similarities, and climate patterns, but lacked a mechanism for movement. Later, plate tectonics provided that explanation, showing that Earth’s lithosphere is divided into plates that shift over the mantle. Though initially rejected, Wegener’s idea laid the foundation for modern geology and our understanding of earthquakes, mountains, and ocean formation.
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