Religion was a major cause of the English Civil War. It was part of a Europe wide conflict between Roman Catholicism and Protestantism. At the start of his reign (1625) King Charles I had married the Roman Catholic Henrietta Maria of France.
The series of battles fought between 1642 and 1651 is known as English Civil War. It was fought between the supporters of king Charles First and the supporters of Parliament. It led to the execution of Charles and formation of commonwealth that lasted for 11 years. England had no monarchy for these 11 years and it was restored in 1660. The reasons for civil wars was that the king Charles tried to change the church of England services and suspension of parliament when people started to demand rights.
The form of city government favored by the biggest cities is the Option C: Mayor-Council. For instance, if we are talking about the state of Texas, then all the largest cities operate via Mayor-Council / Council-manager system, except for the Houston and El Paso.