Scientist who study the ocean floor are called" oceanographer"
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The golden age of radio began in the early 1920s and lasted until the 1970s. Hope this helps
The Definition of pre colonial African societies
In Africa there is referred to as acephalous (or state-less) societies. meaning they are not under any political authorty.
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Answer:
The 20th Amendment to the U.S. Constitution concerns term limits of presidents and vice presidents of the United States, as well as those of members of Congress. Specifically, the 20th Amendment moved the beginning of the terms of the president and vice president from March 4 to January 20.
Explanation:
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