Q
QuestionGeology

When did the Missouri River become longer than the Mississippi River?
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Answer

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Step 1
To answer this question, I'll provide a historical and geographical analysis:

Step 2
: Understanding River Measurements

The length of rivers can change over time due to: - Natural geological processes - River channel modifications - Changes in measurement techniques

Final Answer

The Missouri River became officially recognized as longer than the Mississippi River in 1988, when precise measurements showed it to be 2,341 \text{ miles} long, just 1 \text{ mile} longer than the Mississippi River.