▁his ▁first ▁job ▁as ▁a ▁tele phone ▁operator ▁with ▁the ▁British ▁United ▁River ▁Pl ate ▁Tele phone ▁Company , ▁while ▁following ▁studies ▁in ▁commerce ▁and ▁port - d ut y ▁administration ▁at ▁A du anas ▁Argent inas . ▁He ▁later ▁became ▁an ▁entrepr ene ur , ▁creating ▁an ▁Argent ine ▁import - export ▁company , ▁going ▁into ▁business ▁for ▁himself ▁and ▁making ▁a ▁fortune ▁importing ▁English - T urk ish ▁to b acco ▁to ▁Argentina . ▁ ▁He ▁obtained ▁Argent ine ▁citizens hip ▁in ▁ 1 9 2 9 . ▁Event ually ▁he ▁established ▁his ▁first ▁sh ipping ▁trad ing ▁company ▁in ▁Buenos ▁Aires , ▁Ast iller os ▁On ass is . ▁After ▁gain ing ▁his ▁first ▁fortune ▁in ▁Argentina , ▁he ▁expanded ▁his ▁sh ipping ▁business ▁world wide ▁and ▁re located ▁to ▁New ▁York ▁City , ▁USA , ▁where ▁he ▁built ▁up ▁his ▁sh ipping ▁business es ▁emp ire ▁while ▁keeping ▁offices ▁in ▁Buenos ▁Aires ▁and ▁Ath ens . ▁His ▁legacy ▁in ▁Buenos ▁Aires ▁was ▁the ▁creation ▁of ▁a ▁sh ipping ▁emp ire ▁and ▁a ▁H ellen ic ▁Culture ▁Fund ▁providing ▁youth ▁scholar ships ▁and ▁an ▁academic ▁international ▁exchange ▁program ▁between ▁Argentina , ▁Greece , ▁Mon aco ▁and ▁the ▁United ▁States ; ▁the ▁programs ▁are ▁fund ed ▁and ▁admin ister ed ▁by ▁the ▁On ass is ▁Foundation ▁and ▁were ▁eventually ▁under ▁the ▁man aging ▁direction ▁of ▁his ▁daughter ▁Christ ina ▁On ass is . ▁ ▁Business ▁ ▁Sh ipping ▁On ass is ▁built ▁up ▁a ▁fleet ▁of ▁fre igh ters ▁and ▁tank