Frankfurt National Assembly

The Frankfurt Parliament (German: Frankfurter Nationalversammlung, literally Frankfurt National Assembly) was the first freely elected parliament for all of Germany, elected on 1 May 1848 (see German federal election, 1848).

The session was held from 18 May 1848 to 31 May 1849, in the Paulskirche at Frankfurt am Main. Its existence was both part of and the result of the "March Revolution" in the states of the German Confederation.

After long and controversial debates, the assembly produced the so-called Frankfurt Constitution (Paulskirchenverfassung or St. Paul's Church Constitution, actually Verfassung des Deutschen Reiches) which proclaimed a German Empire based on the principles of parliamentary democracy. This constitution fulfilled the main demands of the liberal and nationalist movements of the Vormärz and provided a foundation of basic rights, both of which stood in opposition to Metternich's system of Restoration. The parliament also proposed a constitutional monarchy headed by a hereditary emperor (Kaiser).

...
Wikipedia