Answer:
a theory of demography
Explanation:
demographic transition a theory of demography which states that, as a nation industrializes, it goes through a series of populational changes, starting with a decline in infant and adult mortality and followed later by a reduction in birth rate.
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Answer:
As famous as Marco Polo is, he didn't invent anything. However, other inventions such as the compass and the boat influenced Polo. Marco Polo used the compass on all of his travels but especially to reach Asia.
Explanation:
The anser is b thats where hitler came up whith the plan exstermanate all jews