Most European leaders favored dealing with Germany through?
Intimidation
Appeasement
war
Isolationism

Most European leaders favored dealing with Germany through Appeasement.

Explanation:

Appeasement emboldened Hitler's Germany, basically prompting WWII. Conciliation, Foreign strategy of mollifying a wronged nation through arrangement so as to forestall war. The prime model is Britain's strategy toward Fascist Italy and Nazi Germany during the 1930s. An exemplary case of pacification is the Munich Pact of 1938, haggled between Neville Chamberlain and Adolf Hitler.

This was the approach of giving Hitler what he needed to prevent him from doing battle. It depended on the possibility that what Hitler needed was sensible and when his sensible requests had been fulfilled, he would stop. In the last prewar years, Western European pioneers picked submission over showdown in their dealings with Nazi Germany.