Temporary capital of Lithuania during the invasion of Poland, to Lithuania according to the Soviet–Lithuanian Mutual Assistance Treaty. Since then Vilnius has been the capital of the Lithuanian SSR and then independent Lithuania. Lithuania refused to have diplomatic relations between Poland and Lithuania until the ultimatum of 1938. Railroad traffic, telegraph lines or even mail could not cross the Polish–Lithuanian border. Lithuania continued to declare Vilnius as its capital in all official documents, including the constitution. Since the city was controlled by Poland, all Lithuanian authorities were transferred to the city of Kaunas, which became the seat of the government. To reconcile reality with
Law of Lithuania Law of Lithuania Lithuanian law is a part of the legal system of Lithuania. It belongs to the civil law legal system, as opposed to the common law legal system. The legal system of Lithuania is based on epitomes of the French and German systems. The Lithuanian legal system is grounded on the principles laid out in the Constitution of the Republic of Lithuania and safeguarded by the Constitutional Court of the Republic of Lithuania. The Lithuanian law has a long history. The origins are traced back to the first written source, the Casimir Code (), published in 1468 by