Question

How did alliance affect world war 1

Answer 1

it helped the Allies win the war because france, briitin and the US were all working together.

Answer 2

Answer: Having an alliance during the first world war meant you could have a campaign on multiple fronts. This also meant that you could have added power to you armies with mercenaries from your allies. I don't know if this answered your question, I don't exactly know specifically what your question is asking.