Which of the following battles was not only a devastating loss for the United States but also the reason that the United States became involved in world war 2?

Pearl Harbor

Explanation:

Pearl Harbor wasn't really a "battle", more-so it was a surprise attack by the Japanese on US soil. Many American lives were lost, so it is considered a devastation loss. The US decided to join the war against Japan and its allies because of the unprovoked attack.

alliances in ww1 were different from ww2 because the entente in ww1 made up of serbia,russia,france,britan,japan and italy later america  and all allied in a sort of balance of power and too keep germany,austria-hungary,and the ottomans down. russia allied the serbians in order to exert its influence in the balkans while france allied the russians because france was still in dismay and insulted after the defeat to the germans during the unification of germany and britian allied the belgians after the germans invasion of belgium.in ww2 the alliances were in a preemptive attempt to deter any further wars into happening while germany and italy allied since they were insulted and humiliated after the previous war while also sharing a similar ideology of facsim along with japan which all 3 had a want for world domination and agreed to assist one another in the endevours 

explanation:

your answer would be (b)