According to this map, which of the following regions contained the most russian missile sites?

a. oriente
b. havana
c. matanzas
d. pinar del rio

D. Pinar Del Rio

Explanation:

This map shows two missile sites in the region of Las Villas and another two sites in the region of Pinar del Rio. Therefore, out of the options, the region that contained the most missile sites would be Pinar del Rio. Cuba was a region with heavy involvement of the Soviet Union due to the fact that Cuba also established a Communist regime.

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