Many cities and towns were built and the population increased by bringing in colonists from Germany and Poland, as well as other countries of Europe.

A number of crusades followed, called by Konrad of Masovia, as well as attacks on Prussian land of the Yotvingians, which later became Polish Podlasie, and of the Sudovians and Galindians.

[3] During one of the first Teutonic raids into Warmia, the Knights destroyed Honeda, a Warmian castle, and built Balga, their own brick fortress.

In 1266, the rulers of Brandenburg arrived in Prussia and built a castle on the border of Warmian and Natangian lands between Balga and Königsberg.

[7] Poles settled in greater numbers after the Second Peace of Thorn (1466), in which the Teutonic Knights renounced any claims to the Prince-Bishopric of Warmia, and recognized it as part of Poland.