The Karanovo Culture was a prominent Neolithic and Chalcolithic civilization in southeastern Bulgaria, spanning approximately 6200-4250 BC. It played a significant role in shaping the region’s early history and interacted with neighboring cultures.

Byzantine rule in Bulgaria, also known as Byzantine domination, occurred between 1018 and 1185 CE, after the fall of the First Bulgarian Empire.

Archaeologists divide the prehistoric era in Bulgaria into a series of distinct archaeological cultures, each defined by characteristic artifacts, settlement patterns, and chronology.

The Vinca Culture was a prominent prehistoric civilization that flourished during the Neolithic period, from 5700 to 4200 BC. Centered primarily in what is now Serbia, Romania, and Northwestern Bulgaria, the Vinca Culture extended its influence into Hungary, Macedonia, and Greece.

How the Sofia–Skopje railway and the Deve Bair tunnel went from 1910 optimism and 1940s concrete to a 2020s EU‑backed comeback.