A confederation is a union of independent states or groups that agree to work together while keeping most of their own power and freedom. Think of it like a group project where each person works on their own part and makes their own decisions, but everyone agrees to cooperate toward a common goal.

In a confederation, each member stays in charge of its own affairs. They only give the central organization enough power to handle things they all agree on, like defense or trade. This is different from a country with a strong central government that makes rules everyone must follow.

The United States actually started as a confederation after the Revolutionary War. The thirteen original states joined together under the Articles of Confederation, but each state kept most of its power. This created problems because the central government was too weak to collect certain taxes or settle disputes between states. That's why the founders eventually replaced it with the Constitution, which created a stronger federal government.

Today, Switzerland is officially called a confederation of cantons (similar to states), where local regions maintain significant independence while working together on national issues. Sports leagues can also function like confederations: individual teams govern themselves but agree to follow league rules when they play each other.