How did Charlemagne treat the people of conquered lands?

Charlemagne generally employed a policy of integration and assimilation towards the people of conquered lands, promoting Christianity and the Latin culture. He established local governance and often appointed local leaders to maintain order and loyalty, while also imposing taxes and military obligations. While he sought to unify his empire, his methods could be harsh, including forced conversions and military campaigns against those who resisted his rule. Overall, Charlemagne aimed to create a cohesive realm while respecting some local customs to ensure stability.