The early 19th century saw the practical applications of the steam engine to transportation. Steam-powered locomotives pulled lines of rail cars from factories to ports where goods were loaded onto ships bound for other ports. Boats that had been pulled up canals by horse or mule were now steam-driven. Despite the immense benefits steam engines provided, they contributed greatly to air and noise pollution. Just a look at the picture below will give you an idea how filthy passengers in the coach car could become.
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