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neolithic revolution
when the humans became sedentary and started to develop agriculture ,livestock farming ,mining, trade and social organisation ,the population growth has been determined by agricultural areas ,the natural environment and it's climate . -
Black death
After the black death epidemic ,which killed thousands of people ,the population slowly recovered -
Industrial revolution
industrian revolution ,wich began in the 18th century ,was a great force change behind the growth and transformation human society .In 1800 there were 890 million people on earth and in 1900 this figure had reached 1.2 billion of people .Now the population exceeded 7.3 billion.