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The world's population

ICSE · Class 12 · History

Quick revision notes for The world's population — ICSE Class 12 History. Key concepts, formulas, and definitions for last-minute revision.

70 questions40 flashcards5 concepts

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Key Topics to Revise

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1. Population growth: main trends and statistics

  • By 1650, the world population had doubled since AD 1 to about 500 million.
  • By 1850, it had more than doubled again to 1,200 million, or 1.2 billion.
  • World population reached 2 billion in 1927.
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2. Regional patterns of population growth

  • Europe and North America had their fastest growth before the First World War.
  • After that, growth in Europe and North America slowed down considerably.
  • In the Third World, especially Africa, Asia, and Latin America, population growth accelerated after the Second World War.
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3. Causes of population increase

  • Industrialization, economic growth, and prosperity in Europe and North America supported larger populations.
  • Public health improved because of advances in medical science and sanitation.
  • Louis Pasteur and Joseph Lister helped reduce the death rate through work on germs and antiseptic techniques in the 1860s.
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4. Consequences of population growth

  • In Europe and North America, population growth helped economic development by providing workers and consumers.
  • Because of prosperity, feeding and educating the growing population was less of a problem in the developed world.
  • Later, low birth rates and longer life expectancy created ageing societies and concern about pensions and welfare.

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Key Concepts

For many centuriesAfter 1850 the world population increasedPopulation growth was faster in industrializedIndustrializationAfter 1945

Frequently Asked Questions

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Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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