History of the Republic of Venice of the Sea" ceremony was established in this period. Orseolo died in 1008. Venice's control over the Adriatic was strengthened by an expedition by Pietro's son Ottone in 1017, by which time Venice had assumed a key role in balancing power between the Byzantine and Holy Roman Empires. During the long Investiture Controversy, an 11th-century dispute between Henry IV, Holy Roman Emperor and Pope Gregory VII over who would control appointments of church officials, Venice remained neutral, and this caused some attrition of support from the Popes. Doge Domenico Selvo intervened in the war between the Normans of Apulia and
Gulf of Saros Gulf of Saros Saros Bay or Gulf of Saros () is an inlet of the northern Aegean Sea located north of the Gallipoli Peninsula in northwestern Turkey. The Archipelago of Saros is in the gulf. It consists the three small islands - The Big island (Büyükada or Yunus adası), The Small island (Küçükada or Defne adası) and The Little island (Minikada or Böcek adası). The bay is long and wide. Far from industrialized areas and thanks to underwater currents, it is a popular summer recreation resort with sandy strands and crystal-clear sea. Scuba diving, windsurfing and fishing are the most