Complex sentence: He soon lost all military support, giving the Uskoks the opportunity to overthrow his rule and was ultimately killed in January of 1602, enabling Senj to return to its usual state, with the fugitive Uskoks returning to Senj where they resumed their acts of piracy.
Split into simpler sentences: He soon lost all military support, giving the Uskoks the opportunity to overthrow his rule and was ultimately killed in January of 1602, enabling Senj to return to its usual state. Rabatta was eventually murdered, and the fugitive uskoks returned to Senj where they resumed their acts of piracy.