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 Odessa Gulf of Odessa Gulf of Odessa, or Odessa Bay, (, Odeska zatoka) is a part of the Black Sea between North Odessa Cape in North and Cape Velyky Fontan in South. The coasts of the gulf have capes Langeron and Malyi Fontan. In the north-western part of the gulf the estuaries Kuyalnik and Khadzhibey are separated by the Kuyalnik-Khadzhibey sandbar. The gulf of Odessa is more like a bight, especially considering the fact that geologically it is an extension of Black Sea Lowland. The gulf has a shape of ellipse stretched from southwest to northeast. Its northeastern portion is more