Answer:
Countries with a strong affiliation to the Orthodox Church use the Cyrillic alphabet.
Step-by-step explanation:
The Cyrillic alphabet is the one used by the six Slavic national languages (Belarusian, Bulgarian, Macedonian, Russian, Serbian and Ukrainian), plus Ruthenian, and other extinct languages. In addition, it is used by several non-Slavic languages spoken in the former Soviet Union - such as Mongol, Kazakh, Uzbek, Kyrgyz and Tajik, among others from Eastern Europe, the Caucasus and Siberia.