The first two and last two
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Answer:
The Medieval Era
Explanation:
"Dark Ages" refers to the Middle/Medieval ages when the monarchy ruled and Roman empire fell. Happened around 500 A.D
Before Polk, the United States and Mexico had boundaries along the Rio Grande River. Texas and Polk claimed that America's southern border ran down to the river south of the United States' positon back then. They had a war, but Mexico lost and U.S kept expanding.
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Answer:
False
Explanation:
It takes place every four years
