On this date in history:

In 1787, the U.S. Constitution, completed in Philadelphia, was signed by a majority of the 55 delegates to the Constitutional Convention.

In 1862, Union forces led by Gen. George McClellan attacked Confederate troops led by Gen. Robert E. Lee near Antietam Creek in Maryland. McClellan blocked Lee's advance on Washington but fell short of victory.

In 1939, Soviet troops invaded Poland, 16 days after Nazi Germany moved into the country.

In 1976, NASA displayed its first space shuttle, the Enterprise, an airplane-like spacecraft costing almost $10 billion that took nearly a decade to develop.

In 1978, Egyptian President Anwar Sadat and Israeli Prime Minister Menachem Begin signed the Camp David Accords, laying the groundwork for a permanent peace agreement between Egypt and Israel after three decades of hostilities.

In 1983, Vanessa Williams of New York became the first African-American to be named Miss America. (She resigned 11 months later after nude photos were published but regained stardom as a singer and actress.)

In 1991, North Korea, South Korea, the Marshall Islands, Micronesia, Estonia, Latvia and Lithuania were admitted to the United Nations.

In 1993, Cambodia's two leading political parties agreed that Prince Norodom Sihanouk would lead the nation. (Sihanouk was installed as king a week later.)

In 2001, U.S. President George W. Bush said Osama bin Laden, the suspected ringleader in the Sept. 11 terrorist attacks, was wanted dead or alive.

In 2004, the death toll from Hurricane Ivan was set at 38 in the United States and 75 in at the Caribbean.

In 2008, the Paralympic Games for athletes with disabilities came to a close in Beijing after about 4,000 competitors vied in 20 sports. The top individual performer was Australian swimmer Matt Cowdrey, an arm amputee from birth who captured five gold and three silver medals.

In 2009, final unofficial results from Afghanistan's controversial presidential election indicated that incumbent Hamid Karzai got 54.6 percent of the vote, enough to avoid a runoff.

In 2010, six suspects were arrested in what was described as a potential terror plot against Pope Benedict XVI during his London visit.

In 2011, a widespread U.S. outbreak of listeria food poisoning was traced to contaminated cantaloupes sold by a Colorado company that recalled millions of melons. Officials said about two dozen people had died of listeriosis in 20 states.

In 2012, joint military operations between the United States and Afghanistan were suspended after an insider attack killed four Americans. We're to the point now where we can't trust these people, a senior military official said.

In 2013, a U.S. Census bureau report said median household income did not fall, and poverty did not rise, in 2012 -- for the first time in several years.

Copyright 2014 by United Press International