WORLD HISTORY

Detailed explanation-1: -Historians have identified several causes that led to the outbreak of the Cold War, including: tensions between the two nations at the end of World War II, the ideological conflict between both the United States and the Soviet Union, the emergence of nuclear weapons, and the fear of communism in the United States.

Detailed explanation-2: -As World War II transformed both the United States and the USSR, turning the nations into formidable world powers, competition between the two increased. Following the defeat of the Axis powers, an ideological and political rivalry between the United States and the USSR gave way to the start of the Cold War.

Detailed explanation-3: -Detailed Solution. The Treaty of Versailles was the most important of the peace treaties that brought World War I to an end. Hence, the correct answer is Option 2. The Treaty ended the state of war between Germany and the Allied Powers.

Detailed explanation-4: -Development of the Hydrogen Bomb While anti-communist tensions were at a moderate baseline in the early years of the Cold War, the period of time encompassing the race to develop a functional hydrogen bomb set the precedent for the rising tensions of the Cold War as it escalated throughout the 20th century.