The limits on the powers of Congress are as follows:
1. The Congress is not allowed to pass laws post ex facto which means that the law cannot prosecute people for a something that was not considered a crime before.
2. Congress is denied the ability to pass bills of attainder meaning they are not allowed to prosecute criminals in special tribunals but only in regular court trials.
3. The Congress cannot suspend the writ of habeas corpus means that the Congress cannot deny the right of the criminals to stand before a judge and learn the charges they face that enables them to defend themselves.
First of he died stabbed. One of his "friends" Brutus helped stab him I believe he was stabbed 32 or 36 times. His last words were to Brutus and they were"u too? His death lead to an empire because his nehpew was next in reign. Augustus made the empire.
Both were by citizens trying to break away from the king. The American revolution was successful while the French ended up with the death of the King and Queen and they went back to a monarchy some years later.