They failed because nobody cared about the railroad. The railroad had to be a government project with leases to companies but the government was too much involved in the slavery issue that it didn't have time to deal with railroads. That's why railroads boomed after the civil war ended.
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It gave a spark to activism and resistance to segregation in the south this began the struggle for justice
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The Caravel affected to trade for European countries by revolutionized European transportation. This technology made it possible for European explorers, fishermen, and merchants to “expand their horizons,” by providing the ability to travel further, faster.
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