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The Industrial Revolution, which began in the 18th century. In 1800 there were 890 million people on Earth and in 1900 this figure had reached 1,2 billion.
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The world's population grew slowly and unevenly until the 19th century
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After the Black Death epidemic in the 14th century. In 1650, there were 516 million inhabitants and in 1750, before the Industrial Revolution,791 million.
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Although the growt has recently no been so fast, the population exceeded 7,3 billion in 2015 and it is predicted to be over 8 billion in 2025.
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The population doubled within 100 years.
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In the 1st century, the world had 256 million inhabitants, and 384 million in the year 1200.
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In 1950 there were 2,5 billion people in the world.
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From then on, the rate at which the population grew rapidly accelerate and reached 6 billion people in 2000.