Answer:
It appears that you are talking about the Middle Ages so the answer is 'C'. Irrigation goes back to pre-history and the fertile crescent.
Explanation:
Answer:
lots of things made them leave
Explanation:
Drought was a big reason but also because the people weren't clean which probably caused health problems. There was also alot of pests and while animals among the area. There was also volcanos and violence happening. Archaologists were really unsure they thought they left abruptly, but now they say they were forced out because of the things that were there to endure.
Answer:
It can cause intense competition among nations with each seeking to overpower the other.
Explanation:
California, Texas and Illinois
Most immigrants from Mexico settled in California (37 percent), Texas
(21 percent), and Illinois (6 percent). the distribution has however shifted to other areas such as Los Angeles, Chicago, Houston, and Dallas metropolitan areas.
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