Question: During periods of time, this acquistion or imposition of elements of Polish culture, such as the language, under populations of territories controlled, or under the influence of Poland; Jan Kazimierz Chodkiewicz, a Lithuanian nobleman, is a prime example of this act - what is it called? 
Sentence (from "Polonization"): To a certain extent Polonization was also administratively promoted by the authorities, particularly in the period following World War II.
Relevant evidence: No