where are the sierra madre oriental mountains located
Sierra Madre Oriental The Sierra Madre Oriental (Spanish  [ˈsjera ˈmaðɾe oɾjenˈtal] (help·info)) is a mountain range in northeastern Mexico. The Sierra Madre Oriental is part of the American Cordillera, a chain of mountain ranges (cordillera) that consists of an almost continuous sequence of mountain ranges that form the western "backbone" of North America, Central America, South America and Antarctica.
Sierra Madre Occidental The Sierra Madre Occidental is a major mountain range system of the North American Cordillera, that runs northwestâ€“southeast through Northwestern and Western Mexico, and along the Gulf of California. The Sierra Madre is part of the American Cordillera, a chain of mountain ranges (cordillera) that consists of an almost continuous sequence of mountain ranges that form the western "backbone" of North America, Central America, South America and Antarctica.
Sierra Madre Occidental Railroads came to the area starting in the 1880s and 1890s, which allowed many old mines in the region to reopen at a profit.[119] Since most of the railroads were American, the foreign influence led to unrest among the people living in the mountains, causing the Tomochic rebellion in 1892.[120] In addition to the railroads, canals were constructed in the 1890s in the Yaqui and Mayo river valleys.[121] However, these canal projects failed due to the resistance that the natives of the valleys put up against the projects.[122] Loggers began arriving in the mountains in the late 1800s. In response to the new industry, the Tarahumara moved further into the canyons.[119]
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