The Second Bulgarian Empire was a hereditary monarchy ruled by a Tsar—the Bulgarian word for Emperor that originated in the 10th century during the First Bulgarian Empire.
Teine Bulgaaria tsaaririik oli pärilik monarhia, mida valitses tsaar – Bulgaaria sõna keisri kohta, mis pärines 10. sajandist, Esimesest Bulgaaria tsaaririigist.