If WW1 had been such a devastating war, why then did Britain go to war again just twenty years after the First World War had ended?  What reasons might there have been?

We began our lesson thinking about this 'Digging Deeper' question.  We then learned about the policy of appeasement which Chamberlain and the British government adopted to deal with Hitler at first.  We worked in groups to sort statements into reasons for and against using appeasement.  Some of us had some very strong opinions about whether appeasement was a good policy to use.