Болгарщина

Etymology
From. Compare with 🇨🇬, 🇨🇬, or 🇨🇬.

An unattested form *Бовгарщина is also possible, as the form бовгар exists, which is a cognate to болгар, where "л" (l) after "о" (o) got changed to "в" (v), which is a common occurrence in Ukrainian phonology.