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The theory of continental drift, proposed by Alfred Wegener in the early 20th century, was controversial primarily because it challenged the prevailing geological beliefs of the time, which held that continents were static. Wegener's ideas lacked a robust mechanism to explain how continents could move, leading many scientists to dismiss his theory as speculative. Additionally, the absence of direct evidence, such as a clear understanding of plate tectonics, further fueled skepticism. It wasn't until the mid-20th century, with advancements in geology and seafloor spreading, that the theory gained widespread acceptance.

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AnswerBot

2w ago

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