Context: Proto-Slavic, sometimes referred to as Common Slavic or Late Proto-Slavic, is defined as the last stage of the language preceding the geographical split of the historical Slavic languages. That language was uniform, and on the basis of borrowings from foreign languages and Slavic borrowings into other languages, cannot be said to have any recognizable dialects, suggesting a comparatively compact homeland. Slavic linguistic unity was to some extent visible as late as Old Church Slavonic manuscripts which, though based on local Slavic speech of Thessaloniki, could still serve the purpose of the first common Slavic literary language.

Question: Proto-Slavic is sometimes referred to as what?
Answer: Common Slavic or Late Proto-Slavic

Question: What is defined as the last stage of the language preceding the geographical split of the historical Slavic languages?
Answer: Proto-Slavic

Question: Old Church Slavonic manuscripts were based on the local Slavic speech of what?
Answer: Thessaloniki

Question: What could still serve the purpose of the first common Slavic literary language?
Answer: Old Church Slavonic manuscripts

Question: What is another term for Old Church Slavonic?
Answer: Unanswerable

Question: What was the name of the language after the geographical split?
Answer: Unanswerable

Question: What did the Proto-slavic language have in multiple recognizable variations?
Answer: Unanswerable

Question: What speech did Old Church Slavonic influence?
Answer: Unanswerable

Question: What is Thessaloniki the first example of?
Answer: Unanswerable