Answer:
Constitutional Monarchies: Belgium, Denmark, Spain, the Netherlands, Sweden, Luxemburg and the United Kingdom.
Federal Republics: Germany and Austria.
Centralised Republics: Bulgaria, Cyprus, Malta, Czech Republic, Estonia, Finland, Franca, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Poland, Portugal, Romania, Slovakia and Slovenia.
Explanation:
In the constitutional monarchies, the head of state is the monarch, who has no truly political powers, whose main function is to represent the state.