They felt endangered because they knew that the government would try to abolish slavery.
Hello There! ^_^
Your question: During what years did the French and Indian war take place..?
Your answer: The year 1754 is when the French and the Indian war took place.
Hope this helps!
In advocating for the League of Nations, Wilson wanted to create a unity between nations in order to avoid the same issues that led to World War I. Unfortunately the US rejected this proposal.