The ridges and valleys of northwestern georgia were created
from the erosion of limestone.
by the area’s long waterways.
by the gorges carved into the mountains.
when the appalachian mountains formed.

the ridges and valleys were created by extreme folding and faulting.

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The ridges and valleys of northwestern Georgia were created when the Appalachian Mountains formed.

Explanation:

Folding, faulting and igneous intrusions from the Appalachian Plateau formed the ridges and valleys of northwestern Georgia.

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