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Author Question: What was the impetus for each of the four social revolutions? What will be an ideal ... (Read 66 times)

JMatthes

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on: Jul 2, 2018
What was the impetus for each of the four social revolutions?
 
  What will be an ideal response?

Question 2

What is a megacity and what were the first megacities in the world?
 
  What will be an ideal response?


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Amiracle

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Reply #1 on: Jul 2, 2018
Answer to Question 1

The first social revolution: domestication of plants and animals. The second social revolution: the invention of the plow. The third social revolution: the invention of the steam engine. The fourth social revolution: the invention of the microchip.

Answer to Question 2

A megacity is a city with a population of 10 million or more. New York City and Tokyo were the first megacities. Today there are a total of 19 megacities.


JMatthes

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Reply 2 on: Jul 2, 2018
Thanks for the timely response, appreciate it

irishcancer18

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Reply 3 on: Yesterday
Excellent

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