The document provides a history of libraries from ancient times to the modern era. It discusses how the earliest libraries began as collections of clay tablets and scrolls in places like Egypt and Mesopotamia. Some important early libraries included the Library of Alexandria, founded in the 3rd century BC, which was a major center of knowledge but was eventually destroyed. Libraries grew again during the Roman Empire and Middle Ages within monasteries, which helped preserve knowledge. The modern library system developed from the 15th century onward with innovations like the printing press and movement for public libraries in the 19th century led by Andrew Carnegie. The Library of Congress was established in 1800 and has grown to be the largest library in the world.