▁in ▁October ▁ 1 8 1 9 ▁and ▁named ▁T ut u ila ▁Rose ▁Island ▁after ▁his ▁wife ▁Rose ▁de ▁Fre yc inet . ▁ ▁In ▁ 1 8 7 2 , ▁the ▁P ago ▁P ago ▁Har bor ▁was ▁recognized ▁by ▁the ▁Americans ▁as ▁the ▁ideal ▁ref uel ing ▁station ▁for ▁the ▁new ▁San ▁Francisco ▁to ▁Sydney ▁steam ship ▁service . ▁In ▁ 1 8 7 2 , ▁the ▁US ▁Navy ▁negoti ated ▁a ▁treat y ▁on ▁T ut u ila ▁to ▁use ▁the ▁island ▁but ▁the ▁U . S . ▁Congress ▁didn ' t ▁rat ify ▁it ▁until ▁ 1 8 7 8 . ▁Due ▁to ▁compet ing ▁interest ▁from ▁Great ▁Britain ▁and ▁Germany ▁which ▁began ▁to ▁emer ge ▁in ▁the ▁ 1 8 6 0 s , ▁in ▁ 1 8 7 9 ▁the ▁Americans ▁formed ▁a ▁tri part ite ▁government ▁of ▁the ▁islands ▁after ▁the ▁Sam o ans ▁declared ▁that ▁they ▁are ▁open ▁to ▁all ▁of ▁them . ▁ ▁The ▁Berlin ▁Conference ▁of ▁ 1 8 8 9 ▁was ▁held ▁to ▁discuss ▁the ▁political ▁future ▁of ▁the ▁islands ▁but , ▁by ▁ 1 8 9 9 , ▁American ▁diss atisf action ▁of ▁not ▁having ▁complete ▁control ▁led ▁to ▁a ▁division ▁of ▁the ▁Sam o an ▁islands , ▁with ▁T ut u ila ▁and ▁A un u ' u ▁forming ▁American ▁Sam oa . ▁The ▁Sam o ans ▁signed ▁the ▁agreement ▁in ▁ 1 9 0 0 ▁and ▁the ▁Flag ▁of ▁the ▁United ▁States ▁was ▁raised ▁on ▁T ut u