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 Batabanó Gulf of Batabanó The Gulf of Batabanó (; ), also called the Batabanó Gulf, is an inlet or strait off southwestern Cuba in the Caribbean Sea, separating mainland Cuba from the Isle of Youth. It is located at . The gulf's northern border begins at the southern coast of Cuba in Pinar del Río Province, Artemisa Province, Mayabeque Province and Matanzas Province, ending at the Zapata Peninsula ("Península de Zapata"), a length of about 80 miles (130 km). The northeastern section of the gulf is also called Ensenada de la Broa. The gulf stretches south about 50 miles (80 km)