Einstein's theory of general relativity was published in 1916. It became fully accepted by scientists in the 1960s and is currently the best explanation of gravity. Why did it take so long to become an accepted scientific theory?

C , More evidence needed to be gathered to validate the ideas in the theory.

Explanation:

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doctrine that the us had the right to expand throughout north america.

answercharacteristics of place include things like economic activity, architecture,and culture,all of which are human elements that alter or can be influenced by the environment;