Here are the matches for the types of government with their best descriptions:
- Confederal System - A government system that is an alliance of independent states.
- Democracy - A system of government in which power is vested in the people, who rule either directly or through freely elected representatives.
- Unitary System - A system of government where power is concentrated in a central authority.
- Oligarchy - A form of power structure in which power resides in the hands of a small number of people.
- Federal System - A system of government in which power is divided between a central authority and constituent political units.
- Autocracy - A system of government in which one person possesses unlimited power.
You can fill in the system descriptions accordingly.