Confederacy (noun)

An alliance or union of nations, states, or organizations for a common purpose.

Origin:

The word 'confederacy' is derived from the latin word 'confederare' meaning 'to unite, to ally.

Examples:

1. The Confederate States of America was a short-lived confederacy in North America.
2. The European Union is a confederacy of countries that work together on common issues.
3. The confederacy of tribes was formed to resist the invading forces.
4. The confederacy of merchants was established to protect their interests.
5. The confederacy of workers was formed to improve working conditions.