Scenarios that might not have happened on March 16 through history…but, in fact, did.
597 BC: The Babylonians capture Jerusalem. Babylonian king Nebuchadnezzar II replaces Jehoiachin as king of Judah with their own puppet, Zedekiah. Like his predecessor, and against the advice of his counselor Jeremiah, Zedekiah revolts against Nebuchadnezzar in an alliance with the Pharaoh of Egypt. Bad idea. Doesn't end well.
37 AD: Caligula becomes emperor and everybody just knows everything's going to get better and better in Rome. Just watch!
1689: The Royal Welch Fusiliers are formed. Perhaps the most famous of them, Robert Graves, of the World War I edition of the Fusiliers (which had changed their name to the Royal Welsh Fusiliers for that war), writes a book about his experience in the war called Goodbye to All That. Later he ends up writing a book called I, Claudius. A lot of it is about Caligula. And how things did not, after all, end well for the Romans after 37 AD.
1861: Edward Clark is made governor of Texas, after Sam Houston is evicted from the governorship for refusing to swear allegiance to the Confederacy. Asked why he refused, Houston tells a crowd in Galveston that Northerners "are not a fiery, impulsive people as you are, for they live in colder climates. But when they begin to move in a given direction, they move with the steady momentum and perseverance of a mighty avalanche, and what I fear is, they will overwhelm the South."