<span>The first four civilizations arose in river valleys that made irrigation, and, hence,</span><span> ...</span><span>Bands of hunter gatherers, significant equality between sexes</span><span> ... </span><span>The Neolithic Revolution</span><span> ... </span><span>Agriculture freed up labor, metal-working one such result</span><span> ..... </span><span>The narrower view suggests that the chief difference between civilizations and other
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During the first industrial revolution, the affected nations moved from a rural economy, based on agriculture and trade, to an urban, industrialized, mechanized, simplified and, thus, overcrowded economy. In 1800 it was possible to have a sustained growth of wealth that allowed the transition to a wide use of innovative machines, especially in transport and work, abandoning animal traction and production based on manual labor.
During the second industrial revolution The exponential development of railways, while structuring a new model of international trade based on the specialized production of each country and the exchange of materials from standardized prices, also enabled huge migratory movements, like boiler boats that even transported large masses of people on intercontinental trips, as was the case of the 55 million Europeans who migrated to North America between 1850 and 1940.
The cause of the great migrations during the second industrial revolution was, mainly, the tremendous demographic growth that there was in Europe during the eighteenth century, which in turn had different causes.
The AG industry was able to provide way bigger amounts of food. With higher amounts and productivity gave farmers a easier time to keep up with the growing population around the world. more people means higher demand for food in larger quantities.
