Answer:
In 1975, together with his childhood friend Paul Allen, Gates developed a version of the programming language BASIC for the first microcomputer – the MITS Altair 8800. ... They officially established Microsoft' on 4 April 1975, with Gates as the CEO. Gates never returned to Harvard.
Explanation:
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The purchase of Alaska in 1867 marked the end of Russian efforts to expand trade and settlements to the Pacific coast of North America, and became an important step in the United States rise as a great power in the Asia-Pacific region.
I believe that the first one is A because Historiography means the study of history.
The Neolithic Revolution <span>was the wide-scale transition of many cultures from hunting and gathering to agriculture and settlement, making larger populations possible.</span>