The Negro Speaks of Rivers by Langston Hughes

I've known rivers:
I've known rivers ancient as the world and older than the flow of human blood in human veins.

My soul has grown deep like the rivers.

I bathed in the Euphrates when dawns were young.
I built my hut near the Congo and it lulled me to sleep.
I looked upon the Nile and raised the pyramids above it.
I heard the singing of the Mississipi when Abe Lincoln went down to New Orleans, and i've seen its muddy bosom turn all golden in the sunset.

I've known rivers:
Ancient dusky rivers.

My soul has grown deep like the rivers.

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Note:
The Euphrates is the longest river (2100 miles) in western Asia.
The Congo is the longest river (2900 miles) in central Africa)
The Nile is the longest river in the WORLD! (4145 miles)

How long is the Mississippi??