Complex sentence: Through the princess' arrest, however, the Orangist plans became clear, which evoked huge resistance amongst Patriot regenten and the bourgeoisie, that had been the victim of violence carried out in support of the plan.
Split into simpler sentences: Through the princess' arrest, however, the Orangist plans became clear. This evoked huge resistance amongst Patriot regenten and the bourgeoisie, that had been the victim of violence carried out in support of the plan.