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Across 2. a waterway from Lake Erie to the Hudson River down to the port of New York City (2 Words) 4. a treaty between us and Spain that gave us present-day Florida (2 Words) 6. a plan that created more efficient transportation and boosted our economy (2 Words) 7. man who invented telegraph and Morse Code (4 Words) 8. president elected in 1816 (2 Words) 9. a slave who led a rebellion in the South (2 Words) 10. man who invented the first American steamboat (2 Words) 12. the original 5 Southern colonies (2 Words) 13. a part of P. Monroe's speech stating any foreign colonization was closed and that we would leave them alone (2 Words) 14. a compromise in the Senate that made Missouri a slave state and Maine a free one, also established the 36, 30 line (2 Words) 15. man who strongly supported the American System (2 Words)

Down 1. an era where machines replaced manual labor (2 Words) 3. a road that ran from Cumberland, Maryland to Vandalia, Illinois (2 Words) 5. a man who invented a light-weight steel plow (2 Words) 11. man who invented interchangeable parts and the cotton gin (2 Words)