The National Assembly (French Assemblee Nationale) is referred to various historical French parliaments or houses of parliament, from june 17 to july 9 in 1789.
The National Assembly is the principal legislative body of the French Republic. It does pass laws, monitors government action and evaluate public policies. It met in summer of 1789 with the purpose of developing a new constitution. After they were barred by the king from entering their usual meeting place they meet in the tennis court.
The Tennis Court Oath was took for them and which they pledged not to disband until a new constitution had been developed.
This decision led directly to the French Revolution.