The most active tectonic regions of North and South America are on the

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The most active tectonic regions of North and South America are on the western coasts, specifically along the Pacific Ring of Fire. This area is characterized by a high amount of seismic and volcanic activity due to the collision of several tectonic plates. In contrast, the eastern coasts of North and South America are relatively stable in terms of tectonic activity.

The Most Active Tectonic Regions of North and South America