In the middle age laws, the judicial administration offered services to people living in there manor, because the system was very harsh on the people.
The types of courts under the law, the church court took care of the serious cases, because the judicial administration took care of the manors.
The Magna Carta was a document created by the nobles. This document gave people more rights and took away some from the kings power.
Habeas Corpus protected people from being imprisoned, even without a trial.
In the common law, Henry II created the grand jury, and the trial jury, to see whether or not a person was accused of a crime, or was innocent or guilty.