Canada and all land east of the Mississippi River
The accurate statements are a) The English people split into two factions known as Cavaliers (the king's supporters), and Roundheads (Parliament's Puritan supporters), c)Oliver Cromwell led the Roundheads into battles and became the lord protector after the Civil War and e)After executing the king, Parliament established a republic. The period of the republic became known as the Protectorate.
I really hope this helps if not use the comments please