What factors contributed to the industrial boom of the early 1900s?
wealth of natural resources, government support for business, and a growing urban population that provided both cheap labor and markets for new produc...
When did the United States start using standardized time and time zones?
On November 18, 1883, America's railroads began using a standard time system involving four time zones, Eastern, Central, Mountain and Pacific.
Why do we have standardized time and time zones?
The expansion of transport and communication during the 19th century created a need for a unified time-keeping system, and time zones were introduced.
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