Landtag

A Landtag (State Diet) is a representative assembly (parliament) in German-speaking countries with legislative authority and competence over a federated state (Land). Landtage assemblies are the legislative bodies for the individual states of Germany and states of Austria, and have authority to legislate in non-federal matters for the regional area.

Likewise, the Landtag of South Tyrol (Italian: Consiglio della Provincia autonoma di Bolzano) is the legislature of the autonomous province of South Tyrol in northeast Italy. In the sovereign principality of Liechtenstein the national parliament is called the Landtag of Liechtenstein.

The German word Landtag is composed of the words Land (state, country or territory) and Tag (day). The German word Tagung (meeting) is derived from the German word Tag, as such meetings were held at daylight and sometimes spanned over several days. The English word 'diet' likewise comes from Latin: dies (day).

In feudal society, the formal class system was reflected in the composition of the Imperial States' representative assemblies (Landstände), regardless of their name well described as estates of the realm: it was not intended as an elected reflection of public opinion, but a fixed expression of established power as recognized in formal privileges, including the right to be seated in person (granted to many nobles (knightage) and prelates, as well as certain cities) or to be represented as elector in a college that is entitled to one or more seats. Therefore, the representatives primarily defended class interests, and decisions were based on a class-based electoral system.

...
Wikipedia