Complex sentence: As a result, new urban centres on the Slovenian part of the border developed; today, the main urban centers of the Slovene Littoral are Koper and the Nova Gorica-Šempeter conurbation.
Split into simpler sentences: As a result, new urban centres on the Slovenian part of the border developed. Today, the main urban centers of the Slovene Littoral are Koper and the Nova Gorica-Šempeter conurbation.