Giving 20 points for easy for many years before 1990, eastern europe and russia had what kind of governments.

It was the communist USSR.

communist

Explanation:

arresting and exicuting citizens

powers  are  denied  to the  national governmentin three distinct ways: some  powers, such as the  power  to levy duties on exports or prohibit the freedom of religion, speech, press, or assembly, are expressly  denied  to the  national government  in the  constitution.