Constitution of the Republic of Lithuania

The Constitution of the Republic of Lithuania (Lithuanian: Lietuvos Respublikos Konstitucija) defines the legal foundation for all laws passed in the Republic of Lithuania. It was approved in a referendum on 25 October 1992.

The first attempt to codify the laws of Grand Duchy of Lithuania took the form of Statutes of Lithuania, with the First Statute in power in 1529. The document, written in Ruthenian language, fulfilled the role of the supreme law of the land, even including provisions that no other law could contradict it.

In the 18th century the Polish-Lithuanian Commonwealth, a federal entity consisting of the Grand Duchy of Lithuania and the Crown of the Kingdom of Poland, faced a period of decline due to increasingly dysfunctional internal politics. In a belated attempt to rectify the situation, a constitution was adopted on May 3, 1791 – one of the oldest codified national constitutions in the world.

The new constitution abolished the liberum veto and banned the szlachta's confederations, features that had crippled decision making the state. The constitution also provided for a separation of powers among legislative, executive and judicial branches of government, established "popular sovereignty" and extended political rights to the bourgeoisie. The peasantry saw their rights increased but it fell short of abolishing serfdom, which was reconfirmed. Religious tolerance was preserved, although the status of the Catholic faith was recognized.

Reciprocal Guarantee of Two Nations of October 22, 1791 accompanied the constitution, affirming the unity and indivisibility of Poland and the Grand Duchy of Lithuania within a single state and their equal representation in state-governing bodies.

...
Wikipedia