The term “National Assembly” (Assemblée nationale) refers to a legislative body in many modern democracies or republics. It can refer either to a singular legislature or one house of a two-part legislature. The United States House of Representatives, although it does not use the title “National Assembly” is functionally equivalent.
The best known National Assembly, and one that served as a model for many subsequent ones in other countries was the one established in the French Revolution (1789).
The first legislative assembly established after the French Revolution was the Estates-General, consisting of representatives of the clergy (first estate), aristocracy (second estate), and commons (third estate). The third estate decided to meet separately and formed their own legislative chamber, the National Assembly.