Answer:
The key problem at the 1789 meeting of the French derivatives general that was convened to address the financial crisis was Representation of the Third Estate. This meeting was called to address the financial crisis of the French monarchy, and the main issue that was discussed was the representation of the Third Estate, which included the common people and the bourgeoisie, in the government. The Third Estate demanded more representation and voting power in the government, which led to the formation of the National Assembly and the beginning of the French Revolution.