The correct answer is : One of the results was that the United States developed the hydrogen bomb.
Explanation: The hydrogen bomb, among the military is called thermonuclear bomb or fusion bomb. It was created by the physicist Edward Teller and revised and improved by Stanislaw Ulam. They launched a combination between a plutonium fission bomb with a large amount of fusion fuel. It was launched for the first time on an otolón in the Pacific in 1952.
The end of the Roman Republic was attributed to the instability of the Roman economy and conflicts within the military and the ruling families. The Republic should have moved towards absolute democracy instead of relying on the royal families to govern the country.