ib ald i ▁helped ▁to ▁secure ▁the ▁Uruguay ▁river , ▁a ided ▁by ▁Italian ▁soldiers . ▁A ▁new ▁expedition ▁tried ▁to ▁secure ▁the ▁Par an á ▁river ▁by ▁navig ating ▁to ▁Par agu ay ▁and ▁returning . ▁The ▁Argent ine ▁army ▁resist ed ▁the ▁invasion ▁of ▁the ▁river ▁at ▁several ▁points ▁along ▁the ▁Par an á ▁( most ▁not ably ▁during ▁the ▁battle ▁of ▁V uel ta ▁de ▁O bl ig ado ), ▁but ▁could ▁not ▁stop ▁them . ▁The ▁damage ▁to ▁the ▁British ▁and ▁French ▁ships , ▁however , ▁were ▁so ▁great ▁that ▁both ▁countries ▁eventually ▁res igned ▁and ▁lifted ▁the ▁block ade . ▁ ▁Just o ▁José ▁de ▁Ur qu iza , ▁governor ▁of ▁Entre ▁R íos , ▁had ▁supported ▁Ros as ▁so ▁far , ▁but ▁the ▁ran ch ers ▁of ▁his ▁province ▁had ▁an ▁expand ing ▁economy ▁and ▁wanted ▁to ▁have ▁a ▁local ▁custom s , ▁able ▁to ▁eng age ▁in ▁commerce ▁with ▁other ▁countries ▁directly . ▁The ▁port ▁of ▁Buenos ▁Aires ▁had ▁that ▁exclusive ▁right . ▁Entre ▁R íos ▁also ▁requested ▁the ▁federal ization ▁of ▁the ▁national ▁income ▁generated ▁by ▁exports , ▁and ▁the ▁calling ▁of ▁a ▁Const itu ent ▁Assembly ▁to ▁write ▁a ▁Constitution , ▁as ▁laid ▁out ▁in ▁the ▁Federal ▁P act . ▁Ur qu iza ▁made ▁a ▁pron unci amiento , ▁res uming ▁the ▁rights ▁of ▁Entre ▁R íos ▁to ▁commerce ▁and ▁negoti ations ▁with ▁other ▁countries , ▁instead ▁of ▁deleg ating ▁such ▁powers ▁to ▁Buenos ▁Aires . ▁Ros as ▁declared ▁war ▁against ▁him , ▁but