How did Sweden's territory change over time?

Around the 10th century, Sweden existed as a small kingdom in Scandinavia, slowly growing stronger through trade and regional expansion. In 1397, Sweden entered the Kalmar Union together with Denmark and Norway, but by 1523 it broke away and re-established its independence under Gustav Vasa. During the 17th century, Sweden began building overseas colonies, including New Sweden in North America and trading forts on the Swedish Gold Coast in West Africa, while at the same time expanding across the Baltic region. At its height, the Swedish Empire controlled Finland, the Baltics, and several territories in northern Germany, becoming one of the dominant powers around the Baltic Sea.

After losing the Great Northern War, Sweden was forced to give up its Baltic lands to Russia, marking the beginning of its decline as a great power. In 1809, Finland was also lost, and a few years later, in 1814, Sweden gave its German territories to Prussia and entered a union with Norway. That union lasted until 1905, when Norway separated peacefully. Since Sweden remained neutral during both World War 1 and World War 2, its borders have stayed largely unchanged, shaping the modern Scandinavian state seen