Sam Houston was inaugurated as the first President of the Republic of Texas.
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Inventor Chester Carlson created the first Xerox image.
The first images from the surface of Venus were received after the Soviet spacecraft Venera 9 landed on the planet.
Microsoft released the Windows 7 operating system.
The Royal Observatory in Greenwich, UK, was adopted as the world's Prime Meridian.
The US gross national debt exceeded $1 trillion.
