The Polish Bohemian alliance was a pact made between the Polish and Bohemians around the year 965. It was formed by the marriage of Mieszko I and Dobrawa of Bohemia. The alliance contributed to the Christianization of Poland. It subsequently provided many advantages, such as offering an escape from the control of Germans and giving the Polish more land and influence. However, the pact did not last long and it broke shortly after the death of Dobrawa of Bohemia.