Today is Monday, Oct. 10, the 284th day of 2016. There are 82 days left in the year. This is Columbus Day in the United States, as well as Thanksgiving Day in Canada.

On this date:

In 1845, the U.S. Naval Academy was established in Annapolis, Maryland.

In 1913, the Panama Canal was effectively completed as President Woodrow Wilson sent a signal from the White House by telegraph, setting off explosives that destroyed a section of the Gamboa dike.

In 1967, the Outer Space Treaty, prohibiting the placing of weapons of mass destruction on the moon or elsewhere in space, entered into force.

In 1973, Vice President Spiro T. Agnew, accused of accepting bribes, pleaded no contest to one count of federal income tax evasion, and resigned his office.

In 2005, Angela Merkel struck a power-sharing deal that made her the first woman and politician from the ex-communist east to serve as Germany’s chancellor.