Who fought on the side of the republicans in the spanish civil war?

anti-communist groups
fascist rebel troops
a professional army
international volunteers

D. International Volunteers

Hope this helps, Kam

answer:    

a.

explanation:

to protect the united states' role as a world leader, president truman wanted to prevent the soviet union from spreading communism beyond its post-world war ii boundaries. he declared that the united states must assist any nations struggling to prevent a communist takeover.