Simplify the following text for a Grade 11 native English-speaking person.
Original: Jacobitism was the political movement dedicated to the restoration of the Stuart kings to the thrones of England , Scotland , later the Kingdom of Great Britain , and the Kingdom of Ireland .
Simplified: Jacobitism was ( and , to a much smaller extent , is ) the political movement that tried to put the Stuart kings back onto the thrones of England , Scotland , and Kingdom of Ireland .