Question

What were the two major developments that took place in the United States of America
the first half of the 19th century?
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Answer 1

Industrial expansion and population growth radically changed the face of the nation's cities. Noise, traffic jams, slums, air pollution, and sanitation and health problems became commonplace. Mass transit, in the form of trolleys, cable cars, and subways, was built, and skyscrapers began to dominate city skylines.

Answer 2

Explanation:

19th Century. Though the 19th century saw the rise of populism, the labor movement and Jacksonian democracy, it also ushered in the Gilded Age, when men like Cornelius Vanderbilt and J. P. Morgan wielded control over politics and business.

1 January 1801 – 31 December 1900

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