Complex sentence: The usual land routes through Bosnia, Lika and Dalmatia were controlled by RSK and Republic of Srpska, forcing traffic and commerce to use ferryboat service and bridges connecting Pag island and mainland Dalmatia, which were often affected by bad weather.
Split into simpler sentences: The usual land routes through Bosnia, Lika and Dalmatia were controlled by the RSK and the Republic of Srpska. This forced traffic and commerce to use ferryboat services and bridges connecting Pag island and mainland Dalmatia, which were often affected by bad weather.