A federation is a union of partially self-governing provinces, states, or other regions under a federal government. In a federation, the self-governing status of the component units and the division o
The United Provinces of Central America was a short-lived federal republic.
A political union is a type of political entity which is composed of, or created from, smaller polities or the process which achieves this. These smaller polities are usually called federated states a
Federation
…A federation (also called a federal state) is a union of partially self-governing provinces, states, or other regions under a federal government (federalism). In a federation, the self-governing status of…
Painting commemorating the unification of the Crown of the Kingdom of Poland and the Grand Duchy of Lithuania as the Polish–Lithuanian Commonwealth