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The industrial revolution enabled a limited land area to support a larger population, spurred the European population, increased levels of social productivity, increased productivity, a wider range of means of subsistence, longer life expectancy, and reduced mortality, which was about human growth in the 19th century. From 1800 to 1914, the European population grew from 190 million to 460 million; the population of the United States increased from 5 million to about 100 million in the same period. Closely related to population growth, more and more people flocked to cities, Western society. Constant urbanization. In Germany, there were only two cities with a population of around 100,000 in 1840, and 48 in 1910. The population of the United Kingdom in 1901 showed that the population engaged in agriculture only accounts for 20% of the population employed by industrial enterprises. Around the United States, in the United States in 1915, about 40% of people live in industrial areas.
The Articles of Confederation was too weak. It gave powers to the state and the central government did not have any power.
When a candidate is officially nominated at the national convention
