 Complete the following phrase:  The Aristias rallied to the cause of Greek nationalism shortly before the Greek uprising of 1821. Costache joined Alexander Ypsilantiss secret society, the Filiki Eteria, which engineered the nationalist expedition in Moldavia and Wallachia. Aristia awaited the Eterists in Bucharest, which had been occupied by troops loyal to Tudor Vladimirescu, who led a 