swartzy
The Mississippi has undergone several course changes during its long history. These changes occurred due to glaciation, earthquakes and other geological phenomenon.
Mississippi River
Course changes of the Mississippi
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replied to: swartzy
gwynraven
Replied to: The Mississippi has undergone several course changes during its long history....
The Illinoian Glacier blocked the Mississippi about 300,000 to 132,000 years ago, diverting it to its present course along the western border of Illinois.