Charles I offends Puritans and Presbyterian Scots. Parliament created a document to limit Charles and he signs it, however he completely ignores it. Eventually, he needs money when his country is threatened.
In 1641, Charles calls Parliament back into session and they quickly make laws to limit the king's power. He tries arresting the members of Parliament, but they escape. A mob of Londoners show up outside his palace and Charles flees to Northern England, where he raises an army of those who stayed loyal to him.
Charles' loyalists were called the Cavaliers and they began fighting against the Puritan supporters of Parliament. Neither side could gain an advantage over the other.
The Puritans make Oliver Cromwell their general and quickly things started to change. Cromwell's new army began defeating the Cavaliers.
In 1647, Cromwell captured Charles and held him prisoner for two years. In 1649, the king was put on trial for treason against the Parliament and was sentenced to death.
The execution was revolutionary. It was the first time in history that any reigning king was publicly executed. Soon after the death of Charles, Cromwell began ruling England with a new form of government.