Simplify the following text for a Grade 12 native English-speaking person.
Original: He concluded that a severe backlash against suspected Catholics would have followed , and that without foreign assistance a successful rebellion would have been unlikely ; despite differing religious convictions , most Englishmen were loyal to the institution of the monarchy .
Simplified: He concluded that the violence of the act would have instead resulted in a more severe backlash against suspected Catholics . Without the involvement of some form of foreign aid , success would have been unlikely , as most Englishmen were loyal to the institution of the monarchy , despite differing religious convictions .