Why did Great Britain and France fail at avoiding war?

Selfishness, cowardice, laziness.

Winston Churchill was screaming against what they were doing, but they thought that bad Adolfie would be satisfied if they let him swallow Austria and Checkoslovackia  

When it was clear that he wasn't, they had to call Churchill to clean the mess they had done.

Explanation:

study of past cultures

the most famous of all the units fighting in cuba, the "rough riders" was the name given to the first u.s. volunteer cavalry under the leadership of theodore roosevelt. roosevelt resigned his position as assistant secretary of the navy in may 1898 to join the volunteer cavalry. the original plan for this unit called for filling it with men from the indian territory, new mexico, arizona, and oklahoma. however, once roosevelt joined the group, it quickly became the place for a mix of troops ranging from ivy league athletes to glee-club singers to texas rangers and indians.