Why do you think King Henry VIII insisted that everyone in England belong the Church of England?

2 answers

Because he wanted to be the supreme ruler of England and didn't want any interference from the Pope.
These three sites will help you with that.

http://www.wsu.edu/~dee/REFORM/ENGLAND.HTM

http://www.renaissance-faire.com/Renfaires/Entertainment/Henry-VIIIA.htm

http://www.historylearningsite.co.uk/reformation.htm