It was primarily the "German Americans" who believed the language of Article 10 of the Treaty of Versailles contradicted the power of Congress to declare war, since the Germans despised the Treaty of Versailles for imposing harsh reparations on Germany.
Charlemagne was the king of the Franks, a Germanic tribe that lived in what today are the countries of France, Belgium and parts of Germany. He was also crowned as the Holy Emperor of Rome. During his rule, he promoted a number of economic and social reforms including the promotion of education and the enforcement of laws on lending and prices. He also defended Christianity in Western Europe and pemited a cultural revival there (the Carolingian Renassaince).