Final answer:
The war from 1642 to 1649 is known as the English Civil War, which ended with the Parliamentarians' victory, led by Oliver Cromwell, over the Royalists and the establishment of the Commonwealth of England.
Step-by-step explanation:
The War from 1642 to 1649
The conflict from 1642 to 1649 is known as the English Civil War. This period saw a series of armed confrontations and political machinations between Parliamentarians (Roundheads) and Royalists (Cavaliers). It was a struggle for political power and control of the English government, and it pitted supporters of King Charles I against the forces of the English Parliament, led by Oliver Cromwell. The Parliamentary forces ultimately triumphed. In 1649, after years of fighting, the trial and execution of Charles I occurred, leading to the temporary abolition of the monarchy and the establishment of the Commonwealth of England, signaling the start of the English interregnum.