I believe the answer is: A.He defeated the Danes and drove them out of England
At that time, the Vkings were regarded as the strongest millitary in Europe. Just like the spartan of greek, the Viking's philosophy is based on seeking hounour through battles. In his battle tactics, Alfred The Gread initiate a blockade for the Viking's ships that left the Danes on England's land to submit and forced to retreat.
production had already declined and unemployment had risen, leaving stocks in great excess of their real value. Among the other causes of the stock market crash of 1929 were low wages, the proliferation of debt, a struggling agricultural sector and an excess of large bank loans that could not be liquidated
As a result of the Neolithic Revolution, by 3,000 BCE the world’s human population grew to roughly 60 or 70 million people--a drastic increase from around eight million previously.
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I believe true hope this helps