Complex sentence: Bálint Török was captured in the sultan's camp, but the sultan declared that John Sigismund could retain the territories to the east of the river Tisza in exchange for a yearly tribute of 10,000 florins.
Split into simpler sentences: Bálint Török was captured in the sultan's camp. The sultan soon declared that John Sigismund could retain the territories to the east of the river Tisza in exchange for a yearly tribute of 10,000 florins.