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The population history of China covers the long-term pattern of population growth in China and its impact on the history of China. The population went through many cycles that generally reached peaks along each imperial power and was decimated due to wars and barbarian invasions. The census data shows that the population as percentage share of ...
China is the second most populous country in Asia as well as the second most populous country in the world, with a population exceeding 1.4 billion.. China has an enormous population with a relatively small youth component, partially a result of China's one-child policy that was implemented from 1979 until 2015.
Published estimates for the 1st century ("AD 1") suggest uncertainty of the order of 50% (estimates range between 150 and 330 million). Some estimates extend their timeline into deep prehistory, to " 10,000 BC", i.e., the early Holocene, when world population estimates range roughly between 1 and 10 million (with an uncertainty of up to an ...
World map depicting 1555–1556. This is a list of countries by population in 1500. Estimate numbers are from the beginning of the year, and exact population figures are for countries that held a census on various dates in that year. The bulk of these numbers are sourced from Alexander V. Avakov's Two Thousand Years of Economic Statistics ...
Population distribution by country in 1939. This is a list of countries by population in 1939 (including any dependent, occupied or colonized territories for empires), providing an approximate overview of the world population before World War II.
HONG KONG — China said Tuesday that its population declined last year for the first time in six decades, a historic shift with profound implications for the world’s second-largest economy ...
The Shortt–Synchronome clock, an electrical driven pendulum clock designed in 1921, was the first clock to be a more accurate timekeeper than the Earth itself. [167] A succession of innovations and discoveries led to the invention of the modern quartz timer. The vacuum tube oscillator was invented in 1912. [168]
Demographic history is the reconstructed record of human population in the past. Given the lack of population records prior to the 1950s, there are many gaps in our record of demographic history. Historical demographers must make do with estimates, models and extrapolations. For the demographic methodology, see historical demography .