atra , ▁which ▁would ▁soon ▁draw ▁in ▁the ▁Portuguese ▁in ▁a ▁dead ly ▁struggle . ▁His ▁first ▁campaign ▁was ▁to ▁Day a , ▁on ▁the ▁north west ▁coast , ▁which , ▁according ▁to ▁Tom é ▁P ires , ▁had ▁not ▁yet ▁been ▁Islam ized ▁( although ▁this ▁can ▁only ▁be ▁partly ▁true ▁since ▁members ▁of ▁the ▁A ce hn ese ▁s ultan ' s ▁family ▁ruled ▁the ▁place ). ▁A ▁Portuguese ▁fort ▁had ▁been ▁built ▁there , ▁but ▁was ▁now ▁lost . ▁Further ▁con quest s ▁extended ▁down ▁the ▁east ▁coast , ▁incorpor ating ▁several ▁pe pper - produ cing ▁and ▁gold - produ cing ▁regions . ▁The ▁addition ▁of ▁such ▁regions ▁ultimately ▁led ▁to ▁internal ▁t ensions ▁within ▁the ▁Sultan ate , ▁as ▁A ce h ' s ▁strength ▁was ▁as ▁a ▁trad ing ▁port , ▁whose ▁economic ▁interests ▁vary ▁from ▁those ▁of ▁producing ▁ports . ▁ ▁Next , ▁a ▁Portuguese ▁fleet ▁with ▁ 2 0 0 ▁men ▁led ▁by ▁Jorge ▁de ▁Brit o ▁arrived ▁in ▁ 1 5 2 1 . ▁Sultan ▁Ali ▁sent ▁an ▁en voy , ▁a ▁certain ▁Portuguese ▁who ▁stayed ▁in ▁A ce h , ▁with ▁g ifts ▁to ▁the ▁visitors . ▁However , ▁the ▁en voy ▁changed ▁sides ▁and ▁persu aded ▁de ▁Brit o ▁to ▁attack ▁the ▁capital ▁of ▁A ce h , ▁rem inding ▁him ▁of ▁previous ▁A ce hn ese ▁rob ber ies ▁and ▁ent icing ▁him ▁with ▁stories ▁of ▁a ▁san ctu ary ▁filled ▁with ▁gold ▁in ▁the ▁capital . ▁However , ▁Sultan ▁Ali