This Day in History: 0000-09-04

4 Sep – The last emperor of the Western Roman Empire, Romulus Augustus, was deposed with Germanic ruler Odoacer proclaimed himself “King of Italy”. This marked the end of the Western Roman Empire (476).
4 Sep – The Army of Northern Virginia crossed the Potomac River into Maryland in the first Confederate invasion of the North (1862).
4 Sep – The first commercial electric power plant in history began operations in New York City, inaugurating the electrical age (1882).
4 Sep – Meningitis vaccine was first offered in Great Britain (2006).