How did nationalism, alliances, imperialism, and military build-ups contribute to the start of World War I? What alternative solutions could have been used to prevent the war beginning (based on historical evidence)? 90 POINTS PLZ HURRY

Alliances- Countries felt loyal to one another so if one was in trouble then the others would come and help out.

Nationalism- To prove that their country is the best.

Imperialism- many European countries sought more expansion

Military- Strong military force.

WWl could have been prevented since the German support from Austria-Hungary.  The "triple alliance" of Germany, the Austro-Hungarian Empire, and Italy was predicated on mutual defense, not on mutual aggression - this is what allowed Italy to abstain from the early phases of the war and eventually to join the Entente Powers.

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b) the confederacy had to pay all union war expenses.

the answer is aristophanes comedies.