WORLD 28

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Across
  1. 1. Tennessee city on the Mississippi River
  2. 6. Twin Cities partner on the Mississippi River
  3. 9. First widely used antibiotic from a mold
  4. 12. Largest city by area in the contiguous United States
  5. 14. Florida Gulf Coast city on Hillsborough Bay
  6. 15. Mississippi coastal city paired with Biloxi
  7. 17. Biological preparation that confers immunity
  8. 22. Florida city crisscrossed by boating canals
  9. 25. Missouri city by the Gateway Arch on the Mississippi
  10. 27. Metro spanning Missouri and Kansas
  11. 28. Long-distance electrical communication using coded pulses
  12. 29. Largest city in Nebraska on the Missouri River
  13. 30. Eastern Idaho city by the Snake River
Down
  1. 1. Dits and dahs system for encoding characters
  2. 2. Coastal city west of Los Angeles
  3. 3. Louisiana city famous for jazz and Mardi Gras
  4. 4. Twin City in North Carolina with Moravian roots
  5. 5. Central Florida city known for theme parks
  6. 6. South Florida city famed for Art Deco and beaches
  7. 7. Sunshine City on Tampa Bay
  8. 8. Largest city in Montana on the Yellowstone River
  9. 10. South Texas city on a shallow bay
  10. 11. Industrial hub in the foothills of the Appalachians
  11. 13. Northwest Louisiana city on the Red River
  12. 16. Southern California city famous for a parade and bowl game
  13. 18. North Carolina city of the Research Triangle
  14. 19. North Carolina banking hub nicknamed the Queen City
  15. 20. Alabama port city on the Gulf Coast
  16. 21. Largest city in South Dakota on the Big Sioux River
  17. 23. Piedmont Triad city known for civil rights history
  18. 24. West Texas city on the Llano Estacado
  19. 26. Gateway to the Black Hills of South Dakota