Answer:
answer is c . as charlemagne had nothing to do with these lands
Explanation:
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The modern Agricultural Revolution was started by the increase in farm technology and new ideas like crop rotation.
The History of the Standard Oil Company<span> is a 1904 book by journalist</span>Ida Tarbell<span>. It is an exposé about the Standard Oil Company, run at the time by oil tycoon John D. Rockefeller, the richest figure in American history.
d.</span><span>19th century objective historiography
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