The alliances system meant that a local conflict could easily result into an intimidating global one. The overall cause of World War was the assassination of Archduke Franz Ferdinand. Nationalism was a great cause of World War one because of countries being greedy and not negotiating.
Your welcome I don't know if that helped. But yea.
The answer is D. The Gupta empire
Because they created large powerful armies to enforce the law.
He is going to build a wall to immigrants out.
