0 , 0 0 0 ▁Ring g its ▁( Span ish ▁Co ins ) ▁for ▁the ▁royal ▁reg alia , ▁which ▁she ▁refused . ▁ ▁See ing ▁the ▁diplom atic ▁advantage ▁gained ▁in ▁the ▁region ▁by ▁the ▁British , ▁the ▁Dutch ▁respond ed ▁by ▁crow ning ▁T eng ku ▁Abd ul ▁Rah man ▁as ▁s ultan ▁instead . ▁They ▁also ▁obtained , ▁at ▁the ▁Congress ▁of ▁Vienna , ▁a ▁withdraw al ▁of ▁British ▁recognition ▁of ▁Joh or - R ia u ▁so vere ig nt y . ▁To ▁further ▁cur tail ▁the ▁British ▁dom ination ▁over ▁the ▁region , ▁the ▁Dutch ▁entered ▁into ▁an ▁agreement ▁with ▁the ▁Joh or - R ia u ▁Sultan ate ▁on ▁ 2 7 ▁November ▁ 1 8 1 8 . ▁The ▁agreement ▁st ip ulated ▁that ▁the ▁Dutch ▁were ▁to ▁be ▁the ▁param ount ▁leaders ▁of ▁the ▁Joh or - R ia u ▁Sultan ate ▁and ▁that ▁only ▁Dutch ▁people ▁could ▁eng age ▁in ▁trade ▁with ▁the ▁kingdom . ▁A ▁Dutch ▁g arrison ▁was ▁then ▁station ed ▁in ▁R ia u . ▁The ▁Dutch ▁also ▁secured ▁an ▁agreement ▁that ▁Dutch ▁consent ▁was ▁required ▁for ▁all ▁future ▁appoint ments ▁of ▁Joh or - R ia u ▁S ult ans . ▁This ▁agreement ▁was ▁signed ▁by ▁Yang ▁Di per tu an ▁M uda ▁R aja ▁Ja af ar ▁representing ▁Abd ul ▁Rah man , ▁without ▁the ▁s ultan ' s ▁consent ▁or ▁knowledge . ▁ ▁Just ▁as ▁the ▁British ▁had ▁done , ▁both ▁the ▁Dutch ▁and ▁Yang ▁Di per