Mirabeau and Abbé Sieyès led the members of the 3rd estate who assembled in the hall of an indoor tennis court in the grounds of Versailles, on 20 June. The 3rd estate declared themselves a National Assembly and wanted a constitution for France that would limit the powers of the monarch.

Members of the Third Estate were led by: Mirabeau and Abbe Sieyes.

The Third Estate was one of the three social classes in France before the French Revolution. It consisted of the common people, who made up the majority of the population but had limited political power and rights compared to the clergy and nobility. The members of the Third Estate were primarily peasants, workers, and the bourgeoisie (middle class).

Roles of Mirabeau and Abbe Sieyes:

1. Mirabeau:
- Honore Gabriel Riqueti, comte de Mirabeau, was a prominent figure during the early stages of the French Revolution.
- He was a nobleman himself, but he sympathized with the Third Estate and advocated for their rights and representation in the Estates-General.
- Mirabeau was known for his powerful oratory skills and his ability to rally support for the cause of the Third Estate.
- He played a crucial role in the formation of the National Assembly, which represented the interests of the Third Estate and pushed for political and social reforms in France.

2. Abbe Sieyes:
- Emmanuel-Joseph Sieyes, commonly known as Abbe Sieyes, was a clergyman and a leading political theorist during the French Revolution.
- He was a member of the First Estate, but he stood with the Third Estate in their struggle for equality.
- Sieyes is best known for his pamphlet "What is the Third Estate?" in which he argued that the Third Estate was the true representative of the nation and should have more power.
- He played a crucial role in the Tennis Court Oath, where the members of the Third Estate pledged not to disband until they had drafted a new constitution for France.

Conclusion:
Mirabeau and Abbe Sieyes were influential leaders who represented the interests of the Third Estate. They played significant roles in advocating for the rights and representation of the common people during the French Revolution. Mirabeau's oratory skills and Sieyes' political theories contributed to the formation of the National Assembly and the eventual transformation of French society and politics.