 Complete the following phrase:  Denmark rose as a great military and mercantile power in the 12th century. It had an interest in ending the frequent Estonian attacks that threatened its Baltic trade. Danish fleets attacked Estonia in 1170, 1194, and 1197. In 1206, King Valdemar II and archbishop Andreas Sunonis led a raid on Ösel island Saaremaa. The Kings of Denmark claimed Estonia, and this was recognised by the pope. In 1219 the Danish fleet landed in the major harbor of Estonia and defeated the Estonians in the 