Original sentence: Chamberlain's legacy is marked by his policy of appeasement towards Nazi Germany regarding the concession of Czechoslovakia to Hitler at Munich in 1938.Chamberlain's political legacy is marked by his dealings with and appeasement of Nazi Germany
Edited sentence: Chamberlain is perhaps the most ill-regarded British Prime Minister of the 20th century in the popular mind internationally, because of his policy of appeasement towards Nazi Germany regarding the abandonment of Czechoslovakia to Hitler at Munich in 1938.Chamberlain's political legacy is overshadowed by his dealings with and appeasement of Nazi Germany