The term "Bulgarian Tsars" refers to the rulers of the First and Second Bulgarian Empires, which existed from the 7th to the 14th centuries. These leaders held the title of "Tsar," derived from the Latin "Caesar," symbolizing their authority and sovereignty. Notable Tsars include Boris I, who converted Bulgaria to Christianity, and Simeon I, known for expanding the empire and promoting culture. The Bulgarian Tsars played a crucial role in shaping the nation's history, culture, and identity. They established a centralized government, promoted literacy, and supported the development of the Cyrillic alphabet. The legacy of these rulers continues to influence Bulgaria today.