Temporary capital of Lithuania constitutional claims, Kaunas was designated as a temporary or provisional capital until Vilnius would be "liberated from Polish occupation". In March 1938, Lithuania accepted a Polish ultimatum, demanding diplomatic relations. Despite normalised relations, the new Lithuanian Constitution, in May 1938, still claimed Vilnius as the "de jure" capital of Lithuania, and Kaunas remained as the temporary capital. Temporary capital of Lithuania The temporary capital of Lithuania () was the official designation of the city of Kaunas in Lithuania during the interwar period. It was in contrast to the declared capital in Vilnius, which was under Polish control from 1920 until
Act of the Re-Establishment of the State of Lithuania Act of the Re-Establishment of the State of Lithuania The Act of the Re-Establishment of the State of Lithuania or Act of March 11 () was an independence declaration by the Lithuanian Soviet Socialist Republic adopted on March 11, 1990, signed by all members of the Supreme Council of the Republic of Lithuania led by Sąjūdis. The act emphasized restoration and legal continuity of the interwar-period Lithuania, which was occupied by the USSR and lost independence in June 1940. It was the first time that a occupied state declared independence from the dissolving Soviet Union. After the partitions of the