Sentence:  ... could hardly be anything else but Hungarian. Beyond the Hungarian presence in this polyglot state, there were, he suggested, speakers of Bulğar Turkic, Türk and <WSD>Sabir</WSD> (which he viewed as Common Turkic) and various other tongues. 
Meaning of the word marked with <WSD> tags:  The (probably Turkic) language spoken by these people.