German unrestricted submarine warfare ultimately resulted in the U.S. joining the Allies during WW1 in 1917. The use of submarines was a violation of U.S. neutrality, and it went back on the promise Germany made in the Sussex pledge.
Explanation:
when one examines the presidency of Richard Nixon one cannot help but be reminded of the Watergate scandal the biggest political Scandal scandal in American history Watergate caused the American public to lose face face in presidency and examine the office as it had never been exam before As Americans went to the polls to Alexa teacher presidents the memories of Watergate went with them and cause them to wonder if such actions would ever be repeated Richard Nixon's and ambition had won him the national the nation's highest office but a twist of fate cause that same abish efficient to take it from him just six years later
The answer is A. I took the test
The first mask was made in 7000 BC. It was used primarily for rituals and ceremonies and where typically made of leather or wood. Keep in mind, these where the first masks that our modern generation has been able to find and preserve, masks could have been made earlier than this but detirriorated over time.
However, the first modern surgical masks where made in the early 1960s and replaced a more primitive method of cloth masks.
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