The rise of reason
1525 A.D.: Sweden and Denmark agree to an open borders treaty, allowing free travel between the Northern and Southern Stormlands.
1535 A.D.: Rationalist thinking takes hold across Sweden, as the entire nation dedicates itself to scientific pursuits.
I've picked up Rationalism, in addition to Commerce, and am totally eschewing Patronage. At this point, a Science victory is looking much, much more viable than Diplomatic. So screw the U.N., we're gonna build spaceships!
1540 A.D.: Missionaries begin spreading Awesomeness to the German capital of Hamburg, which also happens to be the holy city for Judaism. The Germans aren't especially excited about this.
Summer, 1545 A.D.: A Great Scientist in Stockholm heads out for the Westerlands.