In 10th and 11th centuries we were Pagan Baltic tribes, according to Western standards at least. I guess we didn't have up to par governmental structures. Crusaders came back to Europe from Middle East (Levant) and attacked those tribes. Latvian people were conquered and influenced by Germans, while Lithuania unified and established the Kigndom of Lithuania. Few hundred years later Lithuania became one of the most influential states in Europe, and finally crushed the German invaders under Vytautas Alexander The Great, battle of Grunwald 1410. Lithuania could not make territorial demands on Livonia (part modern Latvia) , they had too strong backing from Holy Roman Empire. Sadly so much time passed that our languages and culture shifted apart.