No More Learning

As for Lithuania and Russia, with both of which
countries Poland was always in uninterrupted contact,
the languages of neither of them have influenced Polish,
which, on the contrary, wherever it was politically
supreme, and that was for many centuries over the whole
of Western Russia, for all purposes of social and official
intercourse ousted the vernacular, in proportion as the
aristocracy in those lands became polonized or yielded
before the immigrant           of the suzerain power.