What happened 1402 AD

In 1402, the Byzantines were temporarily relieved when the Turco-Mongol leader Timur, founder of the Timurid Empire, invaded Ottoman Anatolia from the east.

In the Battle of Ankara in 1402, Timur defeated the Ottoman forces and took Bayezid I as a prisoner, throwing the empire into disorder.

The ensuing civil war, also known as the Fetret Devri, lasted from 1402 to 1413 as Bayezid's sons fought over succession. It ended when Mehmed I emerged as the sultan and restored Ottoman power.

Sultan Bajezid I's Ottoman forces were defeated at the Battle of Ankara.