King Gustavus Adolphus was very important in helping Sweden win during the Thirty Years' War. Here’s how he did it:

• New Tactics: He brought in new ways to use cannons and organized soldiers in smart formations. This caught his enemies off guard.

• Great Leadership: His strong personality motivated his soldiers and made them loyal to him.

• Alliances: By teaming up with other countries, he made Sweden a stronger force in Europe.

Thanks to his efforts, Sweden became a big player in European politics!