Prussian uprisingsThe Prussian uprisings were two major and three smaller uprisings by the Old Prussians, one of the Baltic tribes, against the Teutonic Knights that took place in the 13th century during the Prussian Crusade. The crusading military order, supported by the Popes and Christian Europe, sought to conquer and convert the pagan Prussians. In the first ten years of the crusade, five of the seven major Prussian clans fell under the control of the less numerous Teutonic Knights. However, the Prussians rose against their conquerors on five occasions.
LithuanizationLithuanization (or Lithuanianization) is a process of cultural assimilation, where Lithuanian culture or its language is voluntarily or forcibly adopted. The Lithuanian annexation of Ruthenian lands between the 13th and 15th centuries was accompanied by some Lithuanization. A large part of the Grand Duchy of Lithuania remained Ruthenian; due to religious, linguistic and cultural dissimilarity, there was less assimilation between the ruling nobility of the pagan Lithuanians and the conquered Orthodox East Slavs.
KęstutisKęstutis (Kinstut, kæːsˈtutɪs; 1297 – 3 or 15 August 1382) was the Grand Duke of Lithuania. He was the Duke of Trakai and governed the Grand Duchy of Lithuania, 1342–1382, together with his brother Algirdas (until 1377), and with his nephew Jogaila (until 1381). The name "Kęstutis" is a derivative from the old form of the name Kęstas, which is a shortened version of such Lithuanian names as Kęstaras, Kęstautas (there kęs-ti means to cope). Historic writing sources reflect different Lithuanian pronunciation.
