Complex sentence: After Saint Ladislaus' death, his nephew, the King Coloman of Hungary took the hungarian throne and later was was crowned as king of Croatia in 1102, but this was only a nominal title, because the Croatian kingdom itself was absorved into Hungary.
Split into simpler sentences: After Saint Ladislaus' death, his nephew, the King Coloman of Hungary ascended to the hungarian throne. After this, Coloman was crowned as king of Croatia in 1102, but this was only a nominal title, because the Croatian kingdom itself was absorved into Hungary.