The Warsaw dialect became a separate dialect of the Polish language some time in the 18th century, when the Polish substratum was enriched with many borrowed words from the Masovian dialect. The mixture was then heavily influenced by the languages spoken by the burghers of Warsaw and the royal court of Poland. These included the Italian, Yiddish, French, Latin and English. In the 19th century during the Partitions of Poland the dialect incorporated a great number of borrowed words from German and then Russian.