Human Beings Migrating Toward Cities, the Black Marble Image of Space, American Inventor Thomas Edison’s New Lightbulb Design, Coal Use Around the World, American Entrepreneur Edwin Drake’s Oil Well, the Silk Road of Antiquity, the Advent of the Shipping Container, the Panama Canal, the Number of Languages Spoken in New York City, United States of America, Number of Migrants Worldwide Annually, Transport Technology Evolution, Hartsfield-Jackson International Airport the Largest Airport in the World, the World Collective Digital Upload Daily, German Inventor Johannes Gutenberg’s Printing Press, World Population Rates Climbing, the Largest Cattle Farm in the World, Innovations Within Biotechnology for Crops, the Rate Cities are Being Built, and the Retirement of Coal

Over 500 cities worldwide now have over 1,000,000 (1 million) people. For most of human history, cities were the exception not the rule, but the expansive growth of humans congregating within cities has exploded over the past 250 years. Prior to the 19th century, few people ever left the village in which they were born. Abruptly, farming became less and less common as industry and the economy shifted into factories located within cities, placed where money was earned and spent. The Black Marble ...

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