The Duchy of France was a historical region in medieval France, primarily associated with the early Capetian dynasty. It emerged in the 10th century as a significant political entity, with its capital in Paris. The duchy played a crucial role in the formation of the French state and the consolidation of royal power. Over time, the Duchy of France became less distinct as the monarchy expanded its influence. By the late 12th century, it was effectively absorbed into the larger Kingdom of France, marking the transition from feudal duchies to a centralized royal authority under the Capetian kings.