Man-made composite materials date to ancient times, when straw and mud were combined to create bricks used in construction. These brick-making methods were documented in Egyptian tomb paintings. Around 3400 B.C., the ancient Mesopotamians began gluing wood strips at different angles to create plywood. Later (around 2182-2055 B.C.), the Egyptians developed Cartonnage, layers of linen and papyrus soaked in plaster to form death masks. Additionally, concrete (which was described in 25 B.C). A composite material is a material made from two or more constituent materials with significantly different physical or chemical properties that, when combined, produce a material with characteristics different from the individual constituents which are specialized too fit in a specific role. Composite materials achieve the majority of their beneficial properties from a strong bond between the strong, stiff reinforcement. Natural composites exist in both animals and plants. . Cellulose is also found in cotton, but without the lignin to bind it together it is much weaker. The biggest advantage of modern composite materials is that they are light as well as strong.