Demographics of the Victorian era
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Demographics of the Victorian era refers to the demographics of the United Kingdom during the reign of Queen Victoria.

Britain had the lead in rapid economic and population growth. At the time, Thomas Malthus believed this lack of growth outside Britain was due to the carrying capacity of their local environments. That is, the tendency of a population to expand geometrically while resources grew more slowly, reaching a crisis (such as famine, war, or epidemic) which would reduce the population to a more sustainable size.[1] Great Britain escaped the 'Malthusian trap' because the scientific and technological breakthroughs of the Industrial Revolution dramatically improved living standards, reducing mortality and increasing longevity.[citation needed]
The Victorian era was a time of unprecedented population growth in Britain. The population rose from 13.9 million in 1831 to 32.5 million in 1901. Two major contributory factors were fertility rates and mortality rates. Britain was the first country to undergo the demographic transition and the Agricultural and Industrial Revolutions. The population of England and Wales almost doubled from 16.8 million in 1851 to 30.5 million in 1901,[2] and Scotland's population also rose rapidly, from 2.8 million in 1851 to 4.4 million in 1901.[3] However, Ireland's population decreased sharply, from 8.2 million in 1841 to less than 4.5 million in 1901, mostly due to emigration and the Great Famine.[4]
Economist Gary Becker argued that at first, falling fertility is due to urbanisation and lower infant mortality rates, which diminished the benefits and increased the costs of raising children. In other words, it became more economically sensible to invest more in fewer children. This is known as the first demographic transition. This trend continued till around 1950. (The second demographic transition occurred due to the significant cultural shifts of the 1960s, leading to the decline in the desire for children.)[5]