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:

ummm? is that supposed to be a question or a but this is a reason he won re-election

explanation:

"despite progress in the war, lincoln and most political pundits were convinced that he would lose his bid for reelection in 1864. the country was war weary and the democratic party's nominee, george mcclellan, was likely to negotiate a peace treaty with the confederacy if elected." - loc.gov

the answer is b.2008 and 2012 were presidential election years.