"A people who rule over the British Isles. First Celtic, Britain later comes to be Anglo-Saxon and ultimately Norman."
"The eastern half of the former Roman Empire during the Middle Ages."
"A confederation of Germanic tribes unified under the Merovingians, ultimately becoming France."
"A confederation of Slavic tribes who dominated much of modern-day Belarus, Ukraine, and Russia."
"A collection of Muslim warrior states from the Middle East."
"A German military order of Catholic warrior knights who dominated modern-day East Germany."