U.S. Supreme Court ruled on March 3, 1919, that the freedom of speech protection afforded in the U.S. Constitution's First Amendment could be restricted if the words spoken or printed represented to society a "clear and present danger."
Southern Secession is the event or issue that historians can gain.
Advice- Try looking it up because it has all the facts and explanation..
King John ruled England for almost two decades (1199-1216) and was well known as a heavy handed ruler. He would often wage unnecessary wars and burden his subjects with heavy taxes to pay for them. King John begrudgingly signed the Magna Carta because he needed the barons to fight his wars and collect his taxes.