History of Lithuania
On February 16, 1918, Lithuania was re-established as a democratic state. It remained independent until the outset of World War II, when it was occupied by the Soviet Union under the terms of the Molotov–Ribbentrop Pact. Following a brief occupation by Nazi Germany after the Nazis waged war on the Soviet Union, Lithuania was again absorbed into the Soviet Union for nearly 50 years. In 1990–1991, Lithuania restored its sovereignty with the Act of the Re-Establishment of the State of Lithuania. Lithuania joined the NATO alliance in 2004 and the European Union as part of its enlargement in 2004.
Postage stamps and postal history of Lithuania
The Act of Independence of Lithuania was adopted on 16 February 1918, proclaiming Lithuania as an independent republic. The first Lithuanian postage stamps ("Baltukai" issue) were issued in Vilnius in 1918. A total of 768 stamps of different designs were issued by the Republic of Lithuania between 1918 and 1940, with more than 2,000 variations due to errors, misprints or perforations. The first airmail stamps were issued in 1921.