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.
VIII-Metals-A-Steel-1 THE MANUFACTURE OF STEEL Steel refers to any iron-carbon alloy, although steels usually contain other elements as well. In New Zealand steel is made by BH P NZ at Glenbrook, where about 90% of New Zealandâs annual steel requirements are produced.III-Metals-A-Steel-1 THE MANUFACTURE OF STEEL Steel refers to any iron-carbon alloy, although steels usually contain other elements as well. In New Zealand steel is made by BH P NZ at Glenbrook, where about 90% of New Zealandâs annual steel requirements are produced.