The three estates: The 1st estate includes clergy, The 2nd estate includes nobility, and the 3rd estate includes commoners. The Sans culottes were commoners that became radical and militant partisans in response to poor quality of life in France.
The Tennis Court Oath
I hereby promise, along with the rest of the national assembly, to not separate and agree to reassemble whenever need be until the constitution of this kingdom is established.
France fell into a state of economic crisis due to its inefficient tax system. Another reason of the economic crisis was due to the debt that the American revolution caused due to France aiding the Americans.
King Louis XVI called a meeting of the estates general. He called the meeting due to the french government having financial issues.
The Storming of The Bastille & The Great Fear
The national assembly of France took the Tennis Court Oath. The oath stated that the assembly would not dissolve and to reassemble whenever need be until the constitution was established.
The cahiers, AKA the Cahiers de doléances, was the list of grievances that the three estates came up with. King Louis XVI asked his people to come up with the cahiers in order for the king to hear from his people directly.
Cahiers de doléances
The storming of the Bastille happened on July 14th 1789. The Bastille was a political prison and was attacked by a mob. This ended causing The Great Fear which led to the French Revolution.