The English Civil War was a conflict that occurred between 1642 and 1651. This civil war was based on a conflict over whether the crown or the Parliament should have more power in the country. There was also a religious element to the war as the side of Parliament was dominated by Puritans and the crown’s side was mostly Church of England.
In this conflict, Parliament came out on top. There was a republic created under Oliver Cromwell. Cromwell later dissolved it and became a dictator. Even so, the long term impact of the civil war was to weaken the crown and give more power to Parliament, thus making England more democratic.
A period from 1642–1651 when there was a series of armed conflicts and political machinations between Parliamentarians ("Roundheads") and Royalists ("Cavaliers") in the Kingdom of England over, principally, the manner of its government.