Answer:1) 3. 1973
2) 3. Saigon
Explanation: In 1973, the United States officially pulled their troops out of the war after 18 years of fighting.
North Vietnam in 1975 closed in on Saigon and bombed it, hence "The Fall of Saigon."
Answer:The expansion of Islam resulted in European expansion in the sense that "a. Europeans sought to convert new people to Christianity to counteract Islamic influence" however the Crusades also played a large role, albeit not in the sense that they wanted to spread ideas or culture.
Explanation:
Well , they were the first one that implemented the Canal Lock method.
This invention was a new way of water transportation back then and has been a basic for the current modern transportation system
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