Southeastern Europe In The Middle Ages,: 500-125...

Established in 681, Bulgaria became a formidable rival. Under Tsar Simeon the Great, it grew into a cultural and military powerhouse.

As the dust of migrations settled, organized states began to emerge, often challenging Byzantine hegemony: Southeastern Europe in the Middle Ages, 500-125...

Slavic tribes crossed the Danube, permanently altering the region's ethnic and linguistic landscape. Established in 681, Bulgaria became a formidable rival