Bulgarian (bul)

Bulgarian is the official language of Bulgaria, and since 2007 has been among the official languages of the European Union. It is spoken by 12 million people in Bulgaria, as well as parts of Greece, Romania, Moldova, and Ukraine. Bulgarian is mutually intelligible with Macedonian, and fairly closely related to Serbian, Croatian, Bosnian and Slovenian.

A modern literary language based on vernacular spoken Bulgarian was standardized after Bulgaria became independent in 1878. Many Turkish words were adopted into Bulgarian during the long period of Ottoman rule. Words have also been borrowed from Latin, Greek, Russian, French, Italian, German and increasingly from English.

Bulgaria is a secular state with guaranteed religious freedom by constitution, but Orthodoxy is designated as a "traditional" religion. More than three-quarters of Bulgarians subscribe to Eastern Orthodoxy. Sunni Muslims are the second-largest religious community and constitute 10% of Bulgaria's overall religious makeup, although a majority of them are not observant and find the use of Islamic veils in schools unacceptable. Less than 3% of the population are affiliated with other religions and 11.8% are irreligious or do not self-identify with a religion.

Sources:
Wikipedia
https://www.omniglot.com/writing/bulgarian.htm