Oh, Egyptians! Just like Greek and Romans, they were the main technology developers of the old era! Making my article about paper, I discovered they invented Papyrus, which basically was the plant's leaves cut into strips and interlaced with each other to make a paper where they wrote on mostly using carbon based mixtures. The book of death (the most famous text from the ancient Egypt) was made from those materials. They were amazing architects, writers and inventors, and the most important thing they loved cats! Did you know they lost against the Persians because the archers were thrown cats from the Persian's catapults so they didn't dare to shoot their arrows, therefore they lost and were invaded.