Complex sentence: Nikola Mihanović came to Montevideo, Uruguay in 1867, and, having settled in Buenos Aires, Mihanović owned 350 vessels of one kind or another by 1909, including 82 steamers.
Split into simpler sentences: Nikola Mihanović came to Montevideo, Uruguay in 1867. Having settled in Buenos Aires, by 1909 Mihanović owned 350 vessels of one kind or another, including 82 steamers.