One of Henry's greatest achievements was developing the jury trial. People were tired in courts of feudal lords. A royal judge would visit each country once a year. The judge would review the crime. then he would ask 12 men answer about the facts of the case. Which is called the jury.
Common Law became the basis of english speaking countries. Legal decisions made by royal justices were used as precedents in new cases. Then England was unified under a single legal system.
The Magna Carta
The English nobels rebelled agenst king john and they presented their demands written on the Magna Carta. This helped the indivdual rights and liberties.
It was the first representive parliment. This included the lower clergy along with knights,burgesses and citizens. This was important to the democercy because it helped to build the base of democercy of england.