How old is the western cordillera?

The Western Cordillera is a mountain range that runs along the western coast of North America. It is composed of several smaller mountain ranges, including the Coast Mountains, the Cascade Range, and the Sierra Nevada. The Western Cordillera is part of the larger Pacific Ring of Fire, and is home to many volcanoes. The age of the Western Cordillera varies depending on the specific mountain range. For example, the Coast Mountains are estimated to be around 100 million years old, while the Sierra Nevada is estimated to be around 35 million years old.

How many years has it been since 1984?

What evidence suggests that the prosperity of 1920s was not on a firm foundation?

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