In the Late Classic Period Yaxchilan was one of the most powerful Maya cities along the course of the Usumacinta, with Piedras Negras as its major rival. Architectural styles in subordinate sites in the Usumacinta region demonstrate clear differences that mark a clear boundary between the two kingdoms.
Answered by The Community. Making the world better, one answer at a time. Steel is not usually considered a composite, as it is macroscopically homogeneous. However, some steel types, including classical iron-carbon steel, can be considered as metal-matrix composites, as they contain a second phase... sometimes.
Composites are materials made up of individual components, whose combined physical strength exceeds the properties of either of them individually. In the case of composite laminates, there two basic elements involved: fibrous reinforcement(such as Fiberglass or Carbon Fiber), and resin. These two elements are not meant to be used exclusivelyâthey are meant to be combined.