Why was Duke Ellington considered one of the world’s greatest jazz
composers

Im pretty sure its 1940

Leading and anchoring his ever-evolving band for half a century, Ellington showed how the American Orchestra could achieve a perfect balance of music that was both shaped by the composer while also birthed on the spot by the musicians, while also creating art that swung relentlessly while also achieving the heights of emotional engagement. Each of his compositions—which began to number in the thousands—was crafted to bring out the finest talents of the extraordinary individuals who traveled the road with him, and indeed the Duke Ellington Orchestra developed one of the most unique and instantly recognizable musical thumbprints of any ensemble..

Explanation:

congress was not thoroughly prohibiting states from funding religious schools.

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