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A wonderful and marvelous collection of answers to intriguing questions everyone ask about the world covering almost every subject, from science and history to art, language, mathematics, technology, and homeschooling

what is a bailey bridge
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What Is a Bailey Bridge?

A Bailey bridge is a type of pre-fabricated truss bridge designed by Sir Donald Bailey, an Englishman, during the Second World War. It is co

where is the monalisa
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Where Is the Monalisa?

The world’s most famous portrait, painted by Leonardo da Vinci (1452-1519) between 1503 and 1506, hangs today in the Louvre in Paris. The