When the 600 members of the third state came from the resplendent hall of Versallies,they came to the tennis court and assembled inside the hall.Mirabeau(born in a noble family but was convinced of the need to do away with a society of feudal privilege) and Abbe Sieyes(a priest who wrote an influential pamphlet called What is the third state)led the assembly who swore not to disperse till they had drafted a constitution for France and would limit the powers of the monarch which was declared as NATIONAL ASSEMBLY.
When the royal family was sentenced to imprisonment,after that elections were held again and the new elected assembly was called the CONVENTION.Hope it will help you!!!!!

Differences between the National Assembly and the Convention

Introduction:
The French Revolution saw the rise of two important governing bodies - the National Assembly and the Convention. While both these bodies played a crucial role in shaping the course of the Revolution, there were some key differences between them.

1. Formation:
The National Assembly was formed in 1789, following the Estates-General meeting. It was created with the aim of drafting a new constitution for France and bringing about political reforms. The Convention, on the other hand, was formed in 1792, after the fall of the monarchy and the establishment of the First French Republic.

2. Composition:
The National Assembly was made up of representatives from the three estates - the clergy, nobility, and commoners. However, after the Tennis Court Oath, the commoners formed the majority in the Assembly. The Convention, on the other hand, was made up entirely of elected representatives from the commoners.

3. Ideology:
The National Assembly was largely composed of moderate reformers who sought to create a constitutional monarchy in France. They believed in the principles of the Enlightenment and aimed to bring about political and social equality. The Convention, on the other hand, was more radical in its ideology. It was composed of Jacobins who believed in the complete overthrow of the monarchy and the establishment of a republic.

4. Actions:
The National Assembly was responsible for drafting the Declaration of Rights of Man and Citizen, which laid out the principles of the Revolution. They also passed several important laws, such as the Civil Constitution of the Clergy and the abolition of feudalism. The Convention, on the other hand, was responsible for putting Louis XVI on trial and ultimately sentencing him to death. They also passed several laws aimed at suppressing counter-revolutionary activities.

Conclusion:
In conclusion, the National Assembly and the Convention were both important governing bodies during the French Revolution. While they shared some similarities, such as their goal of bringing about political and social equality, there were some key differences between them, such as their composition and ideology. Ultimately, both these bodies played a crucial role in shaping the course of the Revolution and laying the foundations for modern France.