British rule turned opium into a global commodity, establishing a monopoly over the sale of Indian opium in 1773, actively promoting its export, defying Chinese drug laws and fighting two wars to open the Chinese market.[31] Baghdadi Jewish merchants dominated the opium trade with a majority of opium chests auctioned from British authorities being exported to China by Baghdadi Jewish merchants, who competed with Marwari and Parsee merchants for the trade.[31] The Sassoon family eventually controlled 70 percent of the opium trade from India.[2] Great fortunes were also made in the indigo, silk and muslin trade with Dhaka where Baghdadi Jews partnered with Bengali Muslim merchants.[31]