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Industries & Professions /
There are two main types of railroads: major railroads and short lines. With the consolidation in the early part of the 20th century of many smaller lines into larger, more extensive systems, there evolved a limited number of major railroads that operate trains over long distances. Both major and short lines operate freight lines and passenger lines. Railroads are also separated by passenger and freight lines, with freight lines further divided into three classes.
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