The Great Seljuq Empire (Modern Turkish: Büyük Selçuklu Devleti; Persian: دولت سلجوقیان) was a medieval Turkish empire, originating from the Qynyq branch of Oghuz Turks.

The Seljuq Empire controlled a vast area stretching from the Hindu Kush to eastern Anatolia and from Central Asia to the Persian Gulf. From their homelands near the Aral sea, the Seljuqs advanced first into Khorasan and then into mainland Persia before eventually conquering eastern Anatolia.

The Seljuq empire was founded by Tughril Beg in 1037 after the efforts by the founder of the Seljuq dynasty, Seljuq Beg, back in the first quarter of the eleventh century. Seljuq Beg's father was in a higher position in the Oghuz Yabgu State, and gave his name both to the state and the dynasty. The Seljuqs united the fractured political scene of the Eastern Islamic world and played a key role in the first and second crusades. Read more...