Answer:
C. they were prepared for a possible nuclear war
Explanation:
Answer: One by one, the Classic cities in the southern lowlands were abandoned, and by A.D. 900, Maya civilization in that region had collapsed. Finally, some catastrophic environmental change like an extremely long, intense period of drought–may have wiped out the Classic Maya civilization.
Explanation:
Answer:
The Americas.
Explanation:
Because theys set up colonies in the Americas to circulate trade of goods.
D. They secured the U.S. border of the Oregon Territory by negotiating a treaty with England.
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