Final answer:
Louis XVI called the Estates General in 1789 to address debt problems and raise revenue. The meeting resulted in the formation of the National Assembly and the beginning of the French Revolution.
Step-by-step explanation:
The Estates General was called by Louis XVI in 1789 due to debt problems resulting from the Seven Years War and French support for the United States' independence. The meeting was intended to raise revenue through new taxes. The outcome of the meeting was the formation of the National Assembly, the declaration of the Tennis Court Oath, the storming of the Bastille, and the start of the French Revolution.