767 years ago today, on February 10, 1258 (January 6, 1258 lunar calendar), Hulagu occupied Baghdad, the capital of the Arab Empire, ending the caliphate. The Abbasid Caliphate Guard (Painting) The Abbasid Dynasty (750-1258), a dynasty of the Caliphate Empire, and the second hereditary dynasty of the Arab Empire. Because the flag of the Abbasid Dynasty is still black, the Chinese history books call the dynasty "the big food in black". The period of the Abbasid Dynasty was the golden age of Arabia, which lasted more than 500 years. In 747, Abu Muslim (reigned 750-754), a slave, led the Khorasan people in an uprising. In 750, he overthrew the nearly 90-year rule of the Umayyad Dynasty and established the Abbasid Dynasty (750-1258), with the capital of Kufa. In 751, the Arab Empire defeated the army of the Chinese Tang Dynasty Anxi Jiedu in the Battle of Talos in Central Asia and controlled most of Central Asia. In 762, he moved to the new capital of Baghdad. Until 1258, he was destroyed by the Mongol army led by Hulagu. Hulagu (1217 - February 8, 1265), a Mongolian, grandson of Genghis Khan, son of Tuolei, brother of Kublai Khan, Mungo, and Ali Buge, was born to Tuolei's wife, Ruheteni. Hulagu was the founder of the Ilkhanate and the conqueror of Southwest Asia. Although the Ilkhanate lasted for a short time, its appearance completely changed the direction of Western Asian history. In 1251, Mungo seized the throne of the Great Khan at the meeting of the princes and actively planned for further expansion. Kublai Khan was in charge of Chinese affairs, and Hulagu became the commander of the western army. In 1252, with the timid Buhua as the vanguard, he led 12,000 people to the western expedition first. The Abbasid dynasty had been passed down for 36 generations, after 508 years, due to its ability to deal with various invading forces and preserve its position as at least the Muslim religious leader. But this time, Caliph Mustasin's attitude towards Hulagu was so arrogant that he became the last caliph. Hulagu first flooded the main force and commander of the caliph with a burst of water, and then forced the caliph to abandon the city with a wonderful siege. A rare massacre unfolded, hundreds of thousands of residents were killed, and the city of Baghdad with 500 years of cultural accumulation was devastated. The caliph himself was trampled to death. In 1264, Hulagu accepted the canonization of Kublai Khan and became the Il Khan, and the country he established also became the Il Khanate of the four major Mongol khanates (Golden Horde Khanate, Chagatai Khanate, Wokodai Khanate). Arab rule around 732 AD