The Ayyubid dynasty (Arabic: الأيوبيون‎) was a Muslim dynasty of Kurdish origin, founded by Saladin and centered in Egypt. The dynasty ruled much of the Middle East during the 12th and 13th centuries CE. The Ayyubid family, under the brothers Ayyub and Shirkuh, originally served as soldiers for the Zengids until they supplanted them under Saladin, Ayyub's son. In 1174, Saladin proclaimed himself Sultan following the death of Nur al-Din. The Ayyubids spent the next decade launching conquests throughout the region and by 1183, the territories under their control included Egypt, Syria, northern Mesopotamia, Hejaz, Yemen, and the North African coast up to the borders of modern-day Tunisia. Most of the Kingdom of Jerusalem and beyond Jordan River fell to Saladin after his victory at the Battle of Hattin in 1187. However, the Crusaders regained control of Palestine's coastline in the 1190s.

After the death of Saladin, his sons contested control over the sultanate, but Saladin's brother al-Adil eventually established himself as Sultan in 1200. In the 1230s, the Ayyubid rulers of Syria attempted to assert their independence from Egypt and remained divided until Egyptian Sultan as-Salih Ayyub restored Ayyubid unity by taking over most of Syria, excluding Aleppo, by 1247. By then, local Muslim dynasties had driven out the Ayyubids from Yemen, the Hejaz, and parts of Mesopotamia. After repelling a Crusader invasion of the Nile Delta, as-Salih Ayyub's Mamluk generals overthrew al-Mu'azzam Turanshah who succeeded Ayyub as Sultan after his death in 1250. This effectively ended Ayyubid power in Egypt and a number of attempts by the rulers of Syria, led by an-Nasir Yusuf of Aleppo, to recover it failed. In 1260, the Mongols sacked Aleppo and wrested control of what remained of the Ayyubid territories soon after. The Mamluks, who forced out the Mongols after the destruction of the Ayyubid dynasty, maintained the Ayyubid principality of Hama until deposing its last ruler in 1341.

Genghis Khan (/ˈɡɛŋɡɪs ˈkɑːn/ or /ˈdʒɛŋɡɪs ˈkɑːn/,Mongol: [tʃiŋɡɪs xaːŋ] ( listen); 1162? – August 1227), born Temujin, was the founder and Great Khan (emperor) of the Mongol Empire, which became the largest contiguous empire in history after his death.

He came to power by uniting many of the nomadic tribes of northeast Asia. After founding the Mongol Empire and being proclaimed "Genghis Khan", he started the Mongol invasions that resulted in the conquest of most of Eurasia. These included raids or invasions of the Kara-Khitan Khanate, Caucasus, Khwarezmid Empire, Western Xia and Jin dynasties. These campaigns were often accompanied by wholesale massacres of the civilian populations – especially in Khwarezmia. By the end of his life, the Mongol Empire occupied a substantial portion of Central Asia and China.

Before Genghis Khan died, he assigned Ögedei Khan as his successor and split his empire into khanates among his sons and grandsons. He died in 1227 after defeating the Western Xia. He was buried in an unmarked grave somewhere in Mongolia at an unknown location. His descendants went on to stretch the Mongol Empire across most of Eurasia by conquering or creating vassal states out of all of modern-day China, Korea, the Caucasus, Central Asian countries, and substantial portions of modern Eastern Europe, Russia and the Middle East. Many of these invasions resulted in the large-scale slaughter of local populations, which have given Genghis Khan and his empire a fearsome reputation in local histories.