ChronoFive
Play today’s puzzle
Setting the scene
By 1299, Anatolia was fragmented after the Mongol defeat of the Seljuk Sultanate of Rum in 1243. The region was divided among Turkish beyliks (principalities) competing for territory. One small beylik in northwestern Anatolia, near the Byzantine frontier, was led by Osman I, son of Ertuğrul. The Ottomans were frontier warriors (ghazis) who raided Byzantine territory, attracting other Turks seeking plunder and land. Osman's beylik was strategically located on the Byzantine border, allowing expansion at the expense of a weakening empire.
What happened
Around 1299 (the traditional date, though exact year is uncertain), Osman declared independence from the Seljuks, who were Mongol vassals. This marks the founding of the Ottoman Beylik. Osman and his son Orhan captured key Byzantine towns—Bursa fell in 1326, becoming the first Ottoman capital. The Ottomans used a combination of military prowess, religious zeal, and pragmatic governance, incorporating Christians and offering better administration than the Byzantines. They also benefited from Byzantine civil wars, which allowed them to establish a foothold in Europe at Gallipoli in 1354.
Why it still matters
The Ottoman state founded by Osman in 1299 would grow into an empire lasting 623 years (until 1922), conquering Constantinople in 1453, reaching Vienna in 1529, and controlling Southeast Europe, the Middle East, and North Africa at its peak. The Ottomans' success stemmed from their location, military organization (including the Janissary corps), and ability to assimilate diverse peoples. The year 1299 marks the beginning of one of history's longest-lived and most influential empires, which would shape the modern Middle East and Balkans. Osman's dream, according to legend, of a tree growing from his navel to shade the world, symbolized Ottoman imperial ambition.
Background
It later captured Constantinople in 1453. Even centuries later, this episode remains a reference point for how empires rise, fracture, and transform.