After the death of Queen Elizabeth Tudor, James I takes the throne and starts the Stuart dynasty, James I believes he was chosen by God to rule over England.
James I's son Charles I is in Civil War with Parliament, Charles I leads his army (Cavaliers) against Oliver Cromwell who leads the Parliaments army (RoundHeads)
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Oliver Cromwell wins against Charles I and becomes a military dictator of all England. Even though Oliver Cromwell turned England's government into a military Dictatorship, after he died the army restored the government to a Monarchy.