Answer:
The Magna Carta
Explanation:
The Magna Carta is a charter that was signed by King John. It was one of the first pieces of a "constitution" that established that no one was above the law and was very progressive in its day. It was an example of liberty in government. This was established in 1215 and influenced "The Bill of Rights" that essentially had the same ideas of human rights.
People can influence governmental policies by exercising their right to vote
