a. Galileo Galilei is correct. He is credited with improving the telescope and advocating the theory of a sun-centered solar system.
Answer:
Because of the reports of finding beavers.
Answer:
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The 20th century was the most murderous in recorded history. The total number of deaths caused by or associated with its wars has been estimated at 187m, the equivalent of more than 10% of the world's population in 1913. ... The world as a whole has not been at peace since 1914, and is not at peace now.
