Complex sentence: During World War II the Italian government paid him to make hundreds of radio broadcasts criticizing the United States, Franklin D. Roosevelt and Jews, as a result of which he was arrested by American forces in Italy in 1945 on charges of treason.
Split into simpler sentences: During World War II the Italian government hired him for hundreds of radio broadcasts criticizing the United States, Franklin D. Roosevelt and Jews. For this he was arrested by American forces in Italy in 1945 on charges of treason.