Short answers, pulled from the story.
The first written record of Lithuania appears in a 1009 chronicle known as the Annals of Quedlinburg. This document mentions a figure named Lietuva, a pagan priest who was killed by Bruno of Querfurt.
Mindaugas united Lithuanian lands for the first time in the 1230s and formed the Kingdom of Lithuania on the 6th of July 1253. He incorporated Black Ruthenia into Lithuania by taking advantage of the weakened territory of the former Kievan Rus due to the Mongol invasion.
The Supreme Council announced the restoration of Lithuania's independence on the 11th of March 1990. Lithuania became the first Soviet-occupied state to announce the restitution of independence.
The geographic centre of Europe is located in Lithuania at a specific coordinate north of Vilnius. Jean-George Affholder determined this location in 1989 by calculating the centre of gravity of the geometrical figure of Europe.
Drūkšiai is the largest lake in Lithuania. The country contains more than 3,000 lakes, with Tauragnas being the deepest and Asveja being the longest.