<span>B. valve cover. is the answer</span>
Answer:
The Tet Offensive, a surprise attack launched by North Vietnam in the pre-dawn hours of Jan. 31, 1968, was a major turning point in the war
Explanation:
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The Civil War was from 1861-1865 which is 4 years.
Three civil rights leaders were murdered during a voter registration campaign in mississippi known as the freedom summer.