Barak Khan ruled the Golden Horde from 1423 to 1428. With the help of Ulugh Beg, who was a Timurid khan, he dethroned Kepek, Olugh Mokhammad and Dawlat Berdi that all were claiming the throne for the Horde as theirs. Barak seized control of the White Horde that was populated by the Uzbeks, whom referred to Turkic tribes that roamed over the present-day Kazakhstan and Uzbekistan. After that, a rivalry developed between Barak Khan and Ulugh Beg. After the death of Barak in which Ulugh was in conspired in, the title was passed to Abu'l-Khayr Khan of the Shaybanids who founded the Uzbek Khanate in 1428. During his rule, many Turkic tribesmen were unified and came under control. As a result, the Uzbek Khanate became a major power in Central Asia. However, Abu'l-Khayr's successes were thwarted by the Oirats in the middle of the 15th century who had a superior military force. The Oirats raided the Uzbek lands where they burned  cities thus destroying its economy  . In the late 1450's , two sons of Barak Khan, Kerei and Janibek  migrated to Moghulistan by leading 200,000 tribes of supporters whom referred themselves as Kazakhs. With the Khan of Moghulistan Esen Buqa II's permission, they settled in the valleys of Chu and Talas rivers to establish the Kazakh Khanate in 1465. Kerei was proclaimed as the first Khan while Janibek had exercised more power. Kazakh Khanate (TV series), a 2005 Kazakh historical epic film that fictionalizes account Abylai Khan's youth. Myn Bala, a 2011 Kazakh historical drama film set in 1729 during a war between the Kazakhs and the Dzungar Khanate. 
Barak Khan ruled the Golden Horde from 1423 to 1428. With the help of Ulugh Beg, who was a Timurid khan, he dethroned Kepek, Olugh Mokhammad and Dawlat Berdi that all were claiming the throne for the Horde as theirs. Barak seized control of the White Horde that was populated by the Uzbeks, whom referred to Turkic tribes that roamed over the present-day Kazakhstan and Uzbekistan. After that, a rivalry developed between Barak Khan and Ulugh Beg. After the death of Barak in which Ulugh was in conspired in, the title was passed to Abu'l-Khayr Khan of the Shaybanids who founded the Uzbek Khanate in 1428. During his rule, many Turkic tribesmen were unified and came under control. As a result, the Uzbek Khanate became a major power in Central Asia. However, Abu'l-Khayr's successes were thwarted by the Oirats in the middle of the 15th century who had a superior military force. The Oirats raided the Uzbek lands where they burned and looted cities thus destroying its economy while Abu'l-Khayr himself had lost reputation among the nomad clans . In the fall of 1457 , two sons of Barak Khan, Kerei and Janibek , in the fear of persecution Abu'l-Khayr Khan, migrated to Moghulistan by leading 200,000 tribes of supporters whom referred themselves as Kazakhs. With the Khan of Moghulistan Esen Buqa II's permission, they settled in the valleys of Chu and Talas rivers to establish the Kazakh Khanate in 1465. Kerei was proclaimed as the first Khan while Janibek had exercised more power. Kazakh Khanate (TV series), a 2005 Kazakh historical epic film that fictionalizes account Abylai Khan's youth. Myn Bala, a 2011 Kazakh historical drama film set in 1729 during a war between the Kazakhs and the Dzungar Khanate. External links
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and looted
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while Abu'l-Khayr himself had lost reputation among the nomad clans
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late 1450's
fall of 1457
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, in the fear of persecution Abu'l-Khayr Khan,
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External links