The Polish-Swedish wars of the 17th century were a series of conflicts that significantly impacted the balance of power in Northern Europe. These wars, primarily fought between the Polish-Lithuanian Commonwealth and the Swedish Empire, had far-reaching consequences for both nations and the wider region.

• Przyczyny wojen ze Szwecją (Causes of wars with Sweden) included territorial disputes, control over the Baltic Sea trade, and dynastic conflicts.

• The wars resulted in significant territorial changes, economic hardships, and shifts in political influence.

• Key events included the Potop szwedzki (Swedish Deluge) and the involvement of other powers such as Russia and Brandenburg-Prussia.

• The conflicts contributed to the gradual decline of the Polish-Lithuanian Commonwealth's power and influence in Europe.

• Long-term Skutki wojen ze Szwecją (Effects of wars with Sweden) included economic devastation, population losses, and changes in the regional balance of power.