Mecca scholarship governed by the Hashemite Sharifs. In 930, Mecca was attacked and sacked by Qarmatians, a millenarian Ismaili Muslim sect led by Abū-Tāhir Al-Jannābī and centered in eastern Arabia. The Black Death pandemic hit Mecca in 1349. In 1517, the Sharif, Barakat bin Muhammed, acknowledged the supremacy of the Ottoman Caliph but retained a great degree of local autonomy. In 1803 the city was captured by the First Saudi State, which held Mecca until 1813. This was a massive blow to the prestige of the (Turkish) Ottoman Empire, which had exercised sovereignty over the holy city since 1517. The Ottomans
Mecca failures of crowd control because of the large numbers of people who come to make the Hajj. For example, on 2 July 1990, a pilgrimage to Mecca ended in tragedy when the ventilation system failed in a crowded pedestrian tunnel and 1,426 people were either suffocated or trampled to death in a stampede. On 24 September 2015, 700 pilgrims were killed in a stampede at Mina during the stoning-the-Devil ritual at Jamarat. Mecca is at an elevation of above sea level, and approximately inland from the Red Sea. Central Mecca lies in a corridor between mountains, which is often called