Latgalian language
Originally Latgalians were a tribe living in modern Vidzeme and Latgale. It is thought that they spoke the Latvian language, which later spread through the rest of modern Latvia, absorbing features of the Old Curonian, Semigallian, Selonian and Livonian languages. The Latgale area became politically separated during the Polish–Swedish wars, remaining part of the Polish–Lithuanian Commonwealth as the Inflanty Voivodeship, while the rest of Latvians lived in lands dominated by Baltic German nobility. Both centuries of separate development and the influence of different prestige languages likely contributed to the development of modern Latgalian as distinct from the language spoken in Vidzeme and other parts of Latvia.
Latvian language
Until the 19th century, the Latvian language was heavily influenced by the German language, because the upper class of local society was formed by Baltic Germans. In the middle of the 19th century the First Latvian National Awakening was started, led by “Young Latvians” who popularized the use of Latvian language. Participants in this movement laid the foundations for standard Latvian and also popularized the Latvianization of loan words. However, in the 1880s, when Czar Alexander III came into power, Russification started. During this period, some Latvian scholars suggested adopting Cyrillic for use in Latvian. After the czar's death, around the start of the 20th century, nationalist movements reemerged.