Task: Text Categorization
Input (English): To secure the southern border, this ruler created a kingdom of Aquitaine, which even eventually gained control over the Spanish March. His court included a circle of educated clerics who produced a renovatio, including the scholar Alcuin of York and this ruler's biographer, Einhard. Aachen was the site of the Palatine Chapel and palace of this man, the son of Pippin the Short who was crowned Emperor of the Romans on Christmas Day 800 by Pope Leo III. For 10 points, name this Frankish King, the first Holy Roman Emperor.
Output (English): History