confederation
association formed by Polish-Lithuanian szlachta (nobility), clergy, cities, or military forces in the Polish-Lithuanian Commonwealth
en-US/kənˌfɛdɚˈeɪʃən/
en-GB/kənˌfɛdəˈɹeɪʃən/
association formed by Polish-Lithuanian szlachta (nobility), clergy, cities, or military forces in the Polish-Lithuanian Commonwealth