Answer:
d because both sides in Spain were in aided by nazi Germany and the u.s.s.r respectively
Explanation:
Nazi Germany and fascist Italy supported the rightist rebels of Francisco Franco with weapons, supplies, aircraft and artillery. The Soviet Union supported the leftist Republic with some weapons and supplies, but it never engaged directly, something the German pilots did. For example, Nazi pilots bombed Guernica, a city in the País Vasco, a war action that was immortalized by a famous painting by Picasso.