It was the first known library to gather a serious collection of books from beyond its country's borders. The Library was charged with collecting all the world's knowledge. It did so through an aggressive and well-funded royal mandate involving trips to the book fairs of Rhodes and Athens and a policy of pulling the books off every ship that came into port. They kept the original texts and made copies to send back to their owners. Alexandria, because of its man-made bidirectional port between the mainland and the Pharos island, welcomed trade from the East and West, and soon found itself the international hub for trade, as well as the leading producer of papyrus and, soon enough, books.