Why did the idea of France on its doorstep bother the US more than Spain on its doorstep?

U.S and Britain alliances

Explanation:

U.S and Britain alliances were concerned about the Napoleon and being very combative,and lost enterable access to New Orleans.

the right answer is the end of world war ii

after the end of a global wwii all the nations involved, in an attempt to create an organization to maintain world peace. this agreement would work settling international disputes via negotiation and arbitration instead of leading the issues escalate to another war.