Novoslovnica. Guide for a Slavic constructed language

Lexicon connections in Slavic languages
Nevertheless, Slavs started to separate from each other in the seventh century. South Slavs came to Balkan peninsula and assimulated the Illyrian and Turkic peoples that lived there already. Thus, we see how Croatians and Bulgars appeared. The confrontation of Slavs and Germans lead to West Slavic peoples’ appearance. Spreading to the East and confrontation with Finno-Ugric and Turkic peoples poured out into the appearance of East Slavic nations.
Script background
One of the Central ideas of pan-Slavism is the creation of a common Slavic language. This problem was solved many times in one form or another and in different ways starting with the old Church Slavonic language created by St. brothers Constantine-Cyril and Methodius. The invention of the first common Slavic language is associated with the appearance of the first writing, which was to become common Slavic — Glagolitic.
However, over time, the part of the Slavs adopted the Cyrillic alphabet, the part took Latin, and some for a while had the Glagolitic alphabet, the Latin alphabet and a modified Cyrillic alphabet

Baltic scientists in their research[2] worked out a model of Slavic lexical identity. In the picture, you can see the percentage of common lexicon provided by connections between different Slavic languages.
There are three Slavic linguistic and ethnic branches - East Slavic (Russian, Belorussian, Ukrainian and Rusyn), West Slavic (Czech, Slovak, Polish, Kashubian, Silesian, Upper-Sorbian, Lower-Sorbian) and South Slavic (Slovenian, Serbian, Croatian, Macedonian and Bulgarian).
This division goes back into history. Different communication events with other nations, geographical position, territorial pecularity — everything affected Slavic people that became nations that now exist. It is supposed to have three initial tribes of Slavs: Venedes (the ancestors of West Slavs), Antes (the ancestors of East Slavs) and Sklavins (the ancestors of South Slavs). It is controversial, but a viable and a rather popular model within Slavic community.