 Complete the following phrase:  Slavic Lechitic settlements were established in present-day districts of Ciechocino and Pieleszewo in the Early Middle Ages. The territory of Gdańsk Pomerania formed part of Poland since the establishment of the state in the 10th century. A wooden church existed at the site since the 12th century. In 1309 the area was annexed by the State of the Teutonic Order. It was first mentioned in documents in 1357. The area was re-incorporated to the Kingdom of Poland in 1454 by King Casimir IV Jagiellon, and after the subsequent 