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.
National symbols of Lithuania
Lithuanian law states that the flag should be hoisted on historical holidays such as February 16 (marking the re-establishment of the State of Lithuania in 1918), March 11 (commemorating the re-establishment of Lithuania's independence in 1990), July 6 (marking the coronation of Mindaugas as King of Lithuania), July 15 (marking the Battle of Grunwald), October 25 (Constitution Day), and near historically significant buildings such as the Presidential Palace.