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.
History of Lithuania (1219–95)
After Mindaugas' death, the Grand Duchy of Lithuania entered times of relative instability, as reflected by the fact that seven Grand Dukes held the title over the course of the next 32 years. Little is known about this period, but the Gediminid dynasty was founded in about 1280. Despite the instability, the Grand Duchy did not disintegrate. Vytenis assumed power in 1295, and during the next 20 years laid solid foundations for the Duchy to expand and grow under the leadership of Gediminas and his son Algirdas. While the Grand Duchy was established between 1219 and 1295, the years after 1295 marked its expansion.