The emergence of the individual Slavic languages
After the schism between the Eastern (Orthodox) and Western (Roman) Christian churches in the 11th century and the beginning of the Crusades, the Church Slavonic language fell out of use in all West Slavic countries and in the western part of the Balkan Slavic region. The only exception was the renaissance of Croatian Church Slavonic in the 13th century. At the end of the same century, the first Czech verses in the local dialect were written; they were the precursors of the rich poetic literature in the Old Czech language that appeared in the 14th century. The early Czech literary language was marked by the influence of Latin, which had replaced the Bohemian variety of Old Church Slavonic as a literary language.
In the earliest period of its development, the Polish literary language was modeled on the Czech pattern. After the Christianization of Poland, Latin (and later German) loanwords entered the Polish language in their Czech form. The Czech influence is seen in the Polish literary language until the 16th century (the “Golden Age”), when Renaissance tendencies resulted in the creation of genuinely literary works more closely reflecting everyday speech. Later, the Polish literary language was enriched by cross-fertilization with Ukrainian and Belarusian.
In the 16th century in Dalmatia, poets who were influenced by the Italian Renaissance (and who also wrote in Italian and Latin) created a rich poetic literature in Croatian. A Slovene translation of the Bible was published in 1575–84, and Kashubian and Sorbian religious texts were also produced during that period. The comparatively early rise of the West Slavic (and the westernmost South Slavic) languages as separate literary vehicles was related to a variety of religious and political factors that resulted in the decline of the western variants of the Church Slavonic language.
In contrast, the continuing use of Bulgarian Church Slavonic and different variants of Russian Church Slavonic made it difficult to construct literary languages for Bulgarian and Russian that were based on everyday speech. Bulgarian texts were written in Bulgarian Church Slavonic until the 16th century. After that the so-called Damaskin religious literature developed, closer to the popular speech; its development, however, was hampered under Turkish rule. Most of the Old East Slavic (Old Russian) literary texts were written in a mixture of Russian Church Slavonic and the Old Russian vernacular language; only a few documents, particularly some parts of the chronicles (annals), were written entirely in Old Russian. The proportion of South Slavic (Church Slavonic) and East Slavic (Old Russian) elements in each text is different depending on its stylistic peculiarities.
In the middle of the 17th century, the old Great Russian variant of the Church Slavonic language in the official Orthodox Church was replaced by a new variant taken from the southwestern East Slavic tradition, a form that incorporated some Ukrainian and Belarusian elements. That development was connected with a split in the Russian Orthodox Church. The Old Believers, who split off from the main body of the church, continued to use the archaic Great Russian variant, whereas Patriarch Nikon’s new variant, based on the southwestern tradition, was adopted by the official church and is used in it to this day. Because the Ukrainian tradition includes many West Slavic elements, that reform, which occurred after the incorporation of Ukraine into the Russian Empire, was a step in the direction of the Westernization of the Russian language that took place about 1700, when Tsar Peter I the Great began his attempts to reconstruct and Westernize the whole Russian way of life.
In the 18th and 19th centuries, many waves of loanwords from different Western languages entered the Russian language. During an earlier period Russian sentence structures had been formed on Germanic and Latin patterns; the intensive French-Russian bilingualism of the Russian elite in the 18th and 19th centuries not only influenced syntax but also brought a shift in the range of meanings of Russian words as the elite came into contact with western European concepts. The great Russian literature of the 19th and early 20th centuries (from Aleksandr Pushkin [1799–1837] up until Leo Tolstoy’s death in 1910) created a literary language close to everyday speech, especially to that of the villages. In the official style of Russian, however, Church Slavonic elements are still widespread, as can be seen even in general newspaper articles.
The concept of a language that would unite all the Slavs has remained in the back of the Slavic consciousness, not as a real aim but rather as an important symbol. An early interesting attempt to unite different chronological and local Slavic strata was carried out by the 17th-century Croatian traveler to Russia Juraj Križanić. In modern literature one might cite the experiments at unification of Velimir Khlebnikov, a Russian Futurist poet, and of the Polish poet Julian Tuwim, who invented words based on Russian and other Slavic roots in some of his poems.