1. Churchill Downs, Louisville, Kentucky
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2. Seven
3. 1973
4. The unforgettable rivalry of Affirmed and Alydar
5. Canada
6. 1875
7. The Kentucky Derby, the Preakness Stakes, and the Belmont Stakes
8. Citation and Cigar
9. Gary Stevens
10. 1979
11. Secretariat won by 31 lengths
12. Incredible, but true.
13. Seattle Slew
14. Regret, in 1915
15. Woodbine Racetrack, in Canada.