The correct answer is - natural selection.
This is a typical case of natural selection, where we have a group of people that have similar physical traits, that are selected and than isolated from any external influence, so with interbreeding they manage to keep their physical traits for generations to come and thus create a population that resembles their initial ancestors.
Answer:
Fall of the Ming Dynasty. The fall of the Ming dynasty was caused by a combination of factors, including an economic disaster due to lack of silver, a series of natural disasters, peasant uprisings, and finally attacks by the Manchu people.
Explanation:
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Answer:
Inventions like the airplane and machine gun
Explanation:
World War I was so deadly because all of the new weapons that were invented. New technology that was being invented such as machine guns and mustard gas made war deadlier than every war before.