In what year was the Frankish Empire created, as a result of which?

The empire of the Franks was formed in the 9th century thanks to their king Charlemagne, who during his reign expanded the state, conquering several neighboring kingdoms (for example, the state of the Longhebards, Aquitaine, as well as the territory where the Saka tribes lived). Charles’s authority was not in doubt throughout the Western world, and the Pope crowned him with the imperial tiara that had previously belonged to the rulers of Rome. This happened in 800. However, already under Charles’s grandchildren, the Frankish empire split into three independent parts.