So, there were many changes, back and forth...

Some historians have commented how there were major changes in the church in Tudor times.  Each new monarch made changes - one year England would be Protestant, the next year Catholic.

Some historians now think that for the normal people there weren't that many changes - but those who believed really strongly in their religion, such as Puritans (strong Protestants) and strong Catholics, there were serious arguments.

One way to remember the changes is to imagine a roller coaster...