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United States
A federal republic in North America, comprising 50 states, a federal district, and several territories, known for its diverse population and significant influence on global affairs.
Number
A mathematical object used to count, measure, and label; fundamental in mathematics and applicable in various sciences.
Great Railroad Strike
A significant labor action in 1877 in the United States, where railroad workers launched a strike due to wage cuts, leading to widespread unrest.
Baltimore & Ohio
The Baltimore and Ohio Railroad, established in 1827, notable for being one of the oldest railroads in the United States and a key development in American transportation history.
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