Mieszko I of Poland Catholicism, Mieszko I included his Polish state in the European community of Western (Latin) Rite states, i.e. Roman Catholic states. Consequently, neither the Holy Roman Empire nor any other Catholic country could invade Poland for the purpose of Christianizing the region, and Poland could now assert its right to be treated like other Christian states. The baptism also started the spread of the Latin culture into Poland, with the first literate and educated churchmen-advisers joining Mieszko's court. The missionary bishopric started by Jordan in 968 used the Latin liturgy and was directly subordinate to the Papacy. Churches were being built
Mieszko I of Poland the normalization of relations with the Holy Roman Empire and Bohemia, Mieszko I returned to his plans of conquest of the more western part of Pomerania. On 21 September 967 the Polish-Bohemian troops prevailed in the decisive battle against the Wolinians led by Wichmann the Younger, which gave Mieszko the control over the mouth of the Odra River. The German margraves had not opposed Mieszko's activities in Pomerania, perhaps even supported them; the death of the rebellious Wichmann, who succumbed to his wounds soon after the battle, may have been in line with their interests. A telling incident took place