The answer is c truman doctrine
A. The division of government into three branches
The collapse of the cattle kingdom. A combination of factors brought an end to the cattle kingdom in the 1880s. The profitability of the industry encouraged ranchers to increase the size of their herds, which led to both overgrazing (the range could not support the number of cattle) and overproduction. but i think this may help
Answer: The US government's decision to develop a hydrogen bomb, first tested in 1952, committed the United States to an ever-escalating arms race with the Soviet Union. The arms race led many Americans to fear that nuclear war could happen at any time, and the US government urged citizens to prepare to survive an atomic bomb.
Explanation: hopefully this helps you with what ever u are doing