On March 20, 1815, Napoleon Bonaparte returned to Paris after escaping his exile on Elba, beginning his “Hundred Days” rule.

In 1854, the Republican Party of the United States was founded by opponents of slavery at a schoolhouse in Ripon, Wisconsin.

In 1976, kidnapped newspaper heiress Patricia Hearst was convicted of armed robbery for her part in a San Francisco bank holdup carried out by the Symbionese Liberation Army.

In 1995, in Tokyo, packages containing the deadly chemical sarin were opened on five separate subway trains in a domestic terror attack by members of the Aum Shinrikyo cult, causing 14 deaths and injuring more than 1,000.

In 1996, a jury in Los Angeles convicted Erik and Lyle Menendez of first-degree murder in the shotgun slayings of their wealthy parents.