The prompt you have been given is an explanatory essay. See the steps below for how to write a short explanatory essay.
Writing an explanatory essay starts with understanding the subject matter thoroughly.
This is because you can't explain what you don't understand. So you need to read the text and jot your points, especially in relation to the Mississippi River, as you go.
Next, ensure that your points are properly arranged in a logical order. Then create an essay structure that has:
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