Based on the clue '479 feet above sea level on the colorado river in ...', what is the answer?

Based on the clue '455 ad these people whose name is now synonymous w...', what is the answer? Based on the clue '47 bc cleopatra think again', what is the answer? Based on the clue '47 of the 48 constellations he listed in his almag...', what is the answer? Based on the clue '47 yards across the compass seen here at sagres po...', what is the answer? Based on the clue '48 down small fight 4', what is the answer? What is associated with: 4840 square yards equals 1? What is associated with: 489 years after her death this woman becomes a saint when pope benedict xv canonizes her may 1… Based on the clue '49 plus 22 minus 33 plus 11', what is the answer?