Rosetta Stone was found in 1799. Great Britain and France were at war, and one of their battle locations was in Egypt. The French found the stone when they were trying to improve their fortifications. The French lost the battle, and the British confiscated the Rosetta Stone. A pharaoh’s proclamation is written in three different languages on the stone. Jean Francois Champollion deciphered the ancient Egyptian hieroglyphic text by working back through the other two languages. The British Museum now houses the Rosetta Stone. Children can learn more at: Rosetta Stone.
Apollo-Soyuz mission was successful in 1975. Three American astronauts, Thomas P. Stafford, Vance D. Brand, and Donald K. Sayton, from Apollo 18 docked and worked with two Soviet cosmonauts, Alexey Leonov and Valeri Kubasov, on the Soyuz 19 craft. The purpose of the mission was to show that the space race was over and that different countries could work together to forward space exploration. The mission concluded on July 21, 1975. Children can learn more at: Apollo-Soyuz.
Twitter was launched in 2006. Based in San Francisco, the social networking service has more than 500 million users.