Lithuanization (or Lithuanianization) is a process of cultural assimilation, where Lithuanian culture or its language is voluntarily or forcibly adopted.
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Lithuanization in the context of Lithuanians (tribe)
The Lithuanians or Old East Lithuanians (Latin: Letwini; Low German: Lettowen; Old East Slavic: Литъва, Литва; Old Swedish: lättugha; modern Lithuanian: rytiniai senlietuviai) were one of the largest East Baltic tribes, inhabiting present-day Eastern Lithuania in the 5th–13th centuries. Following the Northern Crusades, the ancient Lithuanians began gradually assimilating other neighbouring Baltic tribes, becoming the primary progenitor group of modern Lithuanians.
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