Based on the clue 'about 3 million pilgrims a year visit this cityon ...', what is the answer?

Based on the clue 'about 250 miles long this river is usually navigab...', what is the answer? Based on the clue 'about 250 of these 2 named western us vultures sur...', what is the answer? What is associated with: about 250 people were buried in this tombstone arizona cemetery from 1878 to 1884 including bi… What is associated with: about 2500000 passenger cars gr? What is associated with: about 3 of the popular vote in the 2000 presidential election went to a candidate from this pa… Based on the clue 'about 3 of this countrys people live on collective...', what is the answer? Based on the clue 'about 30 of all animal species are these insects w...', what is the answer? Based on the clue 'about 30 of the worlds bananas are sold under this...', what is the answer?