The steamboat, canals, the telegraph, and the rotary press all helped spur the growth of American journalism in the 1840s.
The advent of new technologies in the 1840s spurred the growth of American journalism. The development of the steamboat and canals made transportation of people and goods much easier and allowed for the growth of cities and the spread of information. The telegraph made communication much faster and allowed for the exchange of ideas and information between journalists in different parts of the country. The rotary press made it possible to print newspapers much faster and in greater quantities, making them more accessible to the public.
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