What is a confederal constitution?

A confederal constitution is a political system where power is decentralized and individual states or regions retain significant autonomy. In a confederal system, the central government's authority is limited to specific areas agreed upon by the member states. This differs from a federal system, where power is shared between the central government and constituent states, and a unitary system, where power is concentrated at the national level. Examples of confederal systems include the Articles of Confederation in the United States before the Constitution was adopted.