Complex sentence: Adoption by the state meant that she was emancipated from her uncles, which later became an issue to them because Suzanne wanted to marry a Dutchman called Jean-François De Witt who was debt-ridden.
Split into simpler sentences: Adoption by the state meant that she was emancipated from her uncles. This later became an issue to her uncles because Suzanne wanted to marry a Dutchman by the name of Jean-François De Witt who was debt-ridden.