What was included in most state constitutions that guaranteed protection of individual liberties based upon common law?

The Bill of Rights

Explanation:

The first ten amendments to the constitution of the United States of America is known as the Bill of Rights, which grants important rights and civil liberties to the people and the states. Such rights includes the right to speak freely and the right to have a fair trial.

The U. S congress, on the 25th of September 1789, transmitted the twelve amendments to the legislatures of the states and two amendments that involved representation of the congress and congressional pay were removed. The remaining ten amendments became what is known as the Bill of Rights.