Answer:
C. He gave Germany a chance to experiment with new weapons.
Explanation:
During the spanish civil war, Hitler and the German State sent powerful air forces and ground units to help Francisco Franco´s nationalist army.
MAny countries including Germany signed an army and ammunition embargo on Spain but ignored it, they sent their new technologies to be tested in the Spanish battlefields, this gave the Germans experience on the battle field and on their new weapons.
We'll if you mean Marco Polo, then probably Italy as he was Italian.
Economic opportunities
Better living conditions
Job opportunities
<span>Marriage was used to form alliances in Japan.
Families hired warriors for protection in Japan.
Japanese estates were centered around a castle.
Japanese peasants owned the land they farmed.
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