A is might be the answer but not sher
Slaves worked field and worked hard to get plants(like cotton) for their owners to sell. The more slaves there were, the more plants were picked, so the economy was better.
For women to gain more freedom. Such as, running for office and voting.
The cold war was a state of geopolitical tensions after world war 2 between powers in the eastern bloc (ussr and it's satellite states) and powers in the western bloc (usa, nato allies and others). The major disagreement in the cold war was due to the usa and ussr nuclear arms race.