Answer: Adolf Hitler
Explanation: Adolf hitler was the dictator of Germany during World War II, although he was allied with Benito Mussolini, and emperor Hirohito, Germany and the nazis (led by hitler) were to blame for the mass genocide of European Jews, homosexuals, soviet civilians, Roma (gypsies), people with disabilities, jehovahs witnesses, poles, Slavs, Ukrainians, non Europeans, Spanish republicans, political victims, and anyone with different religious views such as Roman Catholics, Protestants, and Freemasons.
After the war he became a national hero, and the Republicans nominated him for president in 1868. A primary focus of Grant's administration was Reconstruction, and he worked to reconcile the North and South while also attempting to protect the civil rights of newly freed black slaves.
The League of Nations was created after the first World War to provide a forum for resolving international disputes between other nations.