Answer:
The 1980 United States presidential election was the 49th quadrennial presidential election. It was held on Tuesday, November 4, 1980. Republican nominee Ronald Reagan defeated incumbent Democrat Jimmy Carter. Carter was the first incumbent president to be denied a second term since Herbert Hoover in 1932.
Explanation:
<span>The people who live in the civilization use shells as tools. </span>
We really don't know if it was a hydrogen bomb or not. It is seriously doubted though because their are seismic detectors all over the world and the bomb wasn't as strong as it should have been. The U.S have said that the records that the bomb gave off was around a 4.8 magnitude event. A hydrogen bomb would've given off a 6.8. So their was definitely an explosion, but not as big as korea claims it to have been.
C. im not for sure but hope it helps