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Why did Charles the Bold want to annex Lorraine?

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Map of France highlighting the Burgundy (Bourgogne) region in white at the center-east of the country, with major cities such as Dijon, Nevers, Auxerre, and Macon labeled. Surrounding countries and bodies of water, including Belgium, Germany, Switzerland, Italy, Spain, the Atlantic Ocean, and the Mediterranean Sea, are also shown. An inset map in the upper left corner shows the location of Burgundy within France. — Burgundy Burgundy (Bourgogne), historical region of France.

Charles the Bold sought to annex Lorraine primarily to achieve his goal of territorial consolidation. He aimed to extend his lands as far as the Rhine River and unify his disparate possessions—which included Burgundy, Luxembourg, and the Netherlands—into a single, cohesive state.12

By acquiring Lorraine, Charles intended to bridge the geographical gap between his northern and southern territories. This expansion was a key component of his broader ambition to elevate his status by establishing a kingdom of Burgundy, for which he had even sought a royal title from the Holy Roman emperor.123