In 1900, more than 50% of the U.S. markets were in what industry?
CommunicationsCommunications
3%PharmaceuticalsPharmaceuticals
3%By 1900, most of the U.S. rail network was in place, and the country relied on it heavily, as automobiles were still a thing of the future. The rail sector even dominated industries such as banking, utilities, and iron, coal, and steel. Today, the stock market is much more diversified, with the health, technology, and retail industries taking up large spaces, and rail virtually insignificant.
Source: Yahoo! Finance