D. Western European crusaders conquered the Muslim empires and enslaved most of the people.
The answer to that would be A) peaceful coexistence.
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Answer: i try to do some research but I couldn't find anything.
Explanation:
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The enactment of the Clean Air Act of 1970 (1970 CAA) resulted in a major shift in the federal government's role in air pollution control. This legislation authorized the development of comprehensive federal and state regulations to limit emissions from both stationary (industrial) sources and mobile sources.
The North Vietnamese forces, especially the Viet Cong made their own explosives. They used explosives that did not explode, cut them open and made their own improvised explosives. They used traps like bamboo maces or crossbows which were activated by trip wires. One common trap was the punji stake trap. This was a bed of very sharp bamboo stakes hidden in a large hole for their enemies to fall into.
