The Empire That Refused to Die
When Rome's western half collapsed in 476 CE, the eastern half — centered on Constantinople — carried on. Its people called themselves Romans (Rhomaioi), spoke Greek, and ruled for another 1,000 years. We call it 'Byzantine' today, but they never stopped being Rome.
Justinian's Dream
Emperor Justinian (527–565) nearly restored the whole empire — reconquering North Africa, Italy, and southern Spain. He built the breathtaking Hagia Sophia (537), whose dome seemed to float on light, and codified Roman law into the Corpus Juris Civilis — the basis of law in 60+ countries today.
Greek Fire and Survival
Byzantium survived Arabs, Bulgars, and Rus Vikings using Greek fire — a napalm-like weapon sprayed from ships, whose recipe remains lost. Clever diplomacy, massive walls (the Theodosian Walls held for 1,000 years), and Orthodox Christianity's spread to Russia and the Balkans kept the empire alive.
1453: The Final Fall
On May 29, 1453, Mehmed II's Ottomans breached Constantinople's walls with giant cannons. Emperor Constantine XI died fighting. Hagia Sophia became a mosque. The last Romans were gone — but their law, art, and faith shaped Russia, the Balkans, and Orthodox Christianity forever.