On 10 August, the people of Paris stood up for themselves and replaced the city's Commune and invaded the king's apartments at the Tuileries. The end result was the suspension of the king and the Constitution of 1791, which caused the demise of the Legislative Assembly.
When did the National Assembly break off?
Frustrated with its political impotence, the Third Estate broke from the Estates-General on June 17, 1789, and declared itself the National Assembly.
Why did the National Convention end?
It was at the beginning of the Reign of Terror that the queen, Marie Antoinette, was executed. The National Convention ended in October of 1795 following the execution of Maximilien Robespierre and the excesses of the Reign of Terror. The Directory formed out of and replaced the National Convention.