Question

what is the policy of appeasement of Hitler

Answer 1

Appeasement here means accepting the demands of Hitler who had made Germany a potent force.

Appeasement policy of Hitler

The British Premier Neville Chamberlain adopted the policy of appeasement toward Hitler. All was done in the name of peace.
In Munich Pact in 1938 is an example of this policy. France also be a became a signatory to this Munich Pact.
A part of Czechoslovakia, Sudetenland, was given to Germany.
The British Premier Mr Chamberlain went to said That Hitler was a gentleman and his demands were reasonable.
Ultimately all this steps to appease Hitler led to second World War.

Answer 2

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Instituted in the hope of avoiding war, appeasement was the name given to Britain's policy in the 1930s of allowing Hitler to expand German territory unchecked. Most closely associated with British Prime Minister Neville Chamberlain, it is now widely discredited as a policy of weakness.