"she is a civil war nurse who later started the red cross." via apex US History
The north was more urban, while the south was more rural.
Southern States were free states; Northern states were slave States.
Korea and Vietnam had ongoing wars where the USSR and the US were directly involved.
However Cuba was also a nation of interest since the USSR was stationing Nuclear weapons and supplies there, which would lead to the Bay of Pigs invasion and the Cuban Missile Crisis.
