Earliest human migrations and expansions of archaic and modern humans across continents began two million years ago with the migration out of Africa of Homo erects.
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It is significant because we got more resources
Answer: Should be:
The major industrial cities became overcrowded as workers from rural areas moved there.
and
Because of the steady increase in food production, the population nearly doubled between 1800 and 1850.
Please mark me brainliest if im right
Answer:
Railroad time became the nation's standard, linking Americans in one more way. The unchecked power and greed of the railroad companies led to widespread corruption and abuse of power.
Explanation:
C. It let to the mass migration of the Indian elite.
