Final answer:
Proxy wars are conflicts where external forces support combatants, exemplified by the Spanish Civil War's international interventions and support, making it a key proxy war example.
Explanation:
In the context of wars, a proxy war involves conflicts where the actual combatants are backed by outside forces with more power and resources. The Spanish Civil War serves as a prime example of a proxy war, epitomizing the larger ideological and political struggles of the time. In this conflict, international interventions and support from various countries like Italy, Germany, the Soviet Union, and volunteers from other nations transformed the Spanish Civil War into a proxy battleground.
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