U fiirso qoraalka hoose ka dibna ka jawaab su'aasha kadib isla luqadda qoraalka:  1854 William Cooper wuxuu London ka aasaasay xafiis xisaabineed, kaas oo noqday Cooper Brothers toddobo sano ka dib markii saddexdiisii walaalood ay ku biireen. 1898kii, Robert H. Montgomery, William M. Lybrand, Adam A. Ross Jr. iyo walaalkiis T. Edward Ross waxay sameysteen Lybrand, Ross Brothers iyo Montgomery oo ku yaal Mareykanka. 1957kii Cooper Brothers; Lybrand, Ross Bros & Montgomery iyo shirkad reer Kanada ah oo la yiraahdo McDonald, Currie iyo Co ayaa isku raacay inay qaataan magaca Coopers & Lybrand ee dhaqanka caalamiga ah. Sanadkii 1973 saddexda shirkadood ee xubnaha ka ahaa ee UK, US iyo Canada ayaa magacyadooda u beddelay Coopers & Lybrand. Kadibna 1980 Coopers & Lybrand waxay ballaarisay khibradeeda ku aaddan musalafnimada iyadoo la iibsanayo Cork Gully, oo ah shirkad hoggaamineed oo ku taal aaggan Boqortooyada Ingiriiska. Sannadkii 1990 dalalka qaarkood oo ay ku jirto Boqortooyada Ingiriiska, Coopers & Lybrand waxay ku biireen Deloitte Haskins & Sells si ay u noqdaan Coopers & Lybrand Deloitte: sanadkii 1992 waxay ku noqdeen Coopers & Lybrand.  Su'aal: Shirkadii magaceeda badashay ee noqotay Coopers & Lybrand sanadkii 1992 magaceedu muxuu ahaa?
Coopers & Lybrand Deloitte