The Glorious Revolution
or the Protestant Reformation.
I think it might be Freedom of Speech, not really sure though.
What aspects of Roman government do we still use in our society today?
What styles of Roman architecture and art inspired the European Renaissance?
Was Julius Caesar a Roman hero or villain?
Was it right for Rome to become an empire rather than a republic?
What advancements did the Romans make in science and mathematics?
What advancements did the Romans make in warfare?
How to the Romans compare to the ancient Greeks?
Umm, can you give us something to go on? like some options?