Treaty of Merseburg

Soon after the treaty was concluded, however, Otto died of natural causes and Mieszko prevented Dietric from assuming power in his portion of the divided Poland.

[1] Mieszko II avoided open battle and withdrew into difficult terrain,[1] namely forests nearly impassable for the heavy German cavalry.

[2] With Yaroslav I's support, Bezprym ousted Miesko II, but was murdered in 1032, most likely on account of his cruelty and brutal suppression of noble's opposition.

[2] After Bezprym's death, Conrad's wife, Empress Gisela, as well as several German nobles interceded on Mieszko's behalf and he returned to power, and attended a Hoftag in Merseburg in 1033.

[1][3] However, in the same year Otto died of natural causes and Mieszko successfully prevented Dietric from assuming power in Pomerania, thus reuniting the core of Polish lands.