Today is Sunday, Dec. 11, the 346th day of 2016. There are 20 days left in the year.

On Dec. 11, 1816, Indiana became the 19th state.

In 1792, France's King Louis XVI went before the Convention to face charges of treason. (Louis was convicted, and executed the following month.)

In 1844, the first experimental use of an inhaled anesthetic in dentistry took place as Dr. Horace Wells of Hartford, Connecticut, under the influence of nitrous oxide, had a colleague extract one of his teeth.

In 1928, police in Buenos Aires announced they had thwarted an attempt on the life of President-elect Herbert Hoover.

In 1936, Britain's King Edward VIII abdicated the throne so he could marry American divorcee Wallis Warfield Simpson; his brother, Prince Albert, became King George VI.

In 1941, Germany and Italy declared war on the United States; the U.S. responded in kind.

In 1946, the United Nations International Children's Emergency Fund (UNICEF) was established.

In 1961, a U.S. aircraft carrier carrying Army helicopters arrived in Saigon — the first direct American military support for South Vietnam's battle against Communist guerrillas.

In 1972, Apollo 17's lunar module landed on the moon with astronauts Eugene Cernan and Harrison Schmitt aboard; during three extravehicular activities, they became the last two men to date to step onto the lunar surface.

In 1980, President Jimmy Carter signed legislation creating a $1.6 billion environmental "superfund" to pay for cleaning up chemical spills and toxic waste dumps. "Magnum P.I.," starring Tom Selleck, premiered on CBS.

In 1991, a jury in West Palm Beach, Florida, acquitted William Kennedy Smith of sexual battery, rejecting the allegations of Patricia Bowman.

In 1997, more than 150 countries agreed at a global warming conference in Kyoto, Japan, to control the Earth's greenhouse gases.

In 2008, Bernie Madoff (MAY'-dawf) was arrested, accused of running a multibillion-dollar Ponzi scheme. (Madoff is serving a 150-year federal prison sentence.)