the answer is B. -the racial history of a person's family
(apex)
October 16, 1962- October 28,1962. The crisis began when the US noticed misses being created and aimed at the US. The conflicted ended a few days later when the Russians agreed to remove the missiles they gave to Cuba, and the US agreed to removing missiles in Turkey.
1. Old farms didn't have sprinklers to water their crops.
2. They didn't have pesticides to ward off bugs & insects.
3. They didn't have tractors.
Hope this helped!