User talk:Allenjames123

--Allenjames123 14:49, 31 March 2013 (UTC)

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POPULATION ==''' == The world's population has undergone a massive increase during the 20th century. In 1900 it stood at 1.6 billion. By the end of the century, it topped 6 billion, and is still increasing at the rate of 86 million people. According to the United Nations, world population will be at least 7.9 billion by 2020 and could reach 13 billion by 2050. The world's population is not evenly spread. Some regions, including Europe, eastern North America, India, China and Japan have a much higher density of people. Here there are many more industrial cities, or the land is intensively farmed. Rapid population growth began in about 1800 with the onset of the Industrial Revolution. Then most of the increase was in Europe and North America as better health care and food resources became availabl. In 1900 most of the world's largest cities were in these continents.