Federate a. : United by compact, as sovereignties, states, or nations; joined in confederacy; leagued; confederate; as, federate nations.

Example:
What's the difference between a Federate and a conFederate government?

Taxonomy
Merriam-Webster Online Dictionary, Dictionary, webster, Word Games, Webster Online Dictionary with audio pronunciations, adjective, Google Search, Custom Search, glossary, english, language, ESL, Search, Etymology, Latin, foeder, foedus, alliance.

Defination from the web:
federate from the Merriam-Webster Online Dictionary with audio pronunciations, thesaurus, Word of the Day, and word games. ... united in an alliance or federation : federated. Learn more about "federate" with Google Search: Custom Search ...