Heyo! ;D
Question: "How did the alliances in place before World War 1 affect the war?"
Answer: The alliances helped turn the war into a worldwide conflict, which doing so had a major negative effect on the war before World War I. Hence, If your choices are:
O They allowed for more trade to improve nations' economies.
O They helped to turn the war into a worldwide conflict.
O They prevented the war from becoming too large.
O They prompted a quick end to the war.
"Option B would be the correct choice."
Hope this helps! Pls lmk if it does! :D
~Artastic~