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Long Peace

Long Peace is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Long Peace rather than just read about it. In short: The "Long Peace" is a term for the unprecedented historical period of relative global stability following the end of World War II in 1945 to the present day. The period of the Cold War (1947–1991) was marked by the absence of major wars between the great powers of the period, the United States and the Soviet Union.

Long Peace — main illustration
Long Peace — illustration

Key takeaways

  • Long Peace belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Long Peace to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Long Peace from memory before moving on to harder problems.

Reference excerpt

The "Long Peace" is a term for the unprecedented historical period of relative global stability following the end of World War II in 1945 to the present day. The period of the Cold War (1947–1991) was marked by the absence of major wars between the great powers of the period, the United States and the Soviet Union. First recognized in 1986, the period of "relative peace" has been compared to the 200-year-long stability of the Roman Empire, called the Pax Romana, or the Pax Britannica, a century of relative peace that existed between the end of the Napoleonic Wars in 1815 and the outbreak of World War I in 1914, during which the British Empire held global hegemony.

In the 1990s, it was thought that the Long Peace was a unique result of the Cold War; however, when the Cold War ended, the same trends continued in what has also been called the "New Peace". The period has exhibited more than a quarter of a century of even greater stability and peacefulness and has also shown continued improvements in related measurements such as the number of coups, the amount of repression, and the durability of peace settlements. Though civil wars and lesser military conflicts have occurred, there has been a continued absence of direct conflict between any of the largest economies by gross domestic product; instead, wealthier countries have fought limited small-scale regional conflicts with poorer countries. Conflicts involving smaller economies have also gradually tapered off. Overall, the number of international wars decreased from a rate of six per year in the 1950s to one per year in the 2000s, and the number of fatalities decreased from 240 reported deaths per million to less than 10 reported deaths per million. In 2012, the European Union was awarded the Nobel Peace Prize "for over six decades [having] contributed to the advancement of peace and reconciliation, democracy and human rights in Europe" by a unanimous decision of the Norwegian Nobel Committee. Major factors cited as reasons for the Long Peace have included the deterrence effect of nuclear weapons, the economic incentives towards cooperation caused by globalization and international trade, the worldwide increase in the number of democracies, the World Bank's efforts in reduction of poverty, and the effects of the empowerment of women and peacekeeping by the United Nations; however, no factor is a sufficient explanation on its own and so additional or combined factors are likely. Other proposed explanations have included the proliferation of the recognition of human rights, increasing education and quality of life, changes in the way that people view conflicts (such as the presumption that wars of aggression are unjustified), the success of non-violent action, and demographic factors such as the reduction in birthrates. In the book The Better Angels of Our Nature, Steven Pinker considers that to be part of a trend that has continued since the beginning of recorded history, and other experts have made similar arguments. While there is general agreement among experts that we are in a Long Peace and that wars have declined since the 1950s, Pinker's broader thesis has been contested. Critics have also said that a longer period of relative peace is needed to be certain, or they have emphasized minor reversals in specific trends, such as the increase in battle deaths between 2011 and 2014 due to the Syrian civil war. In the 2020s, the Russian invasion of Ukraine has been recognized, including by Pinker himself, as having interrupted some of the trends of the Long Peace. Pinker's work has received some publicity, but most information about the Long Peace and related trends remains outside public awareness, and some data demonstrate a widespread perception that the world has become more dangerous.

See also Balance of power Balance of terror Deterrence theory Dissolution of the Soviet Union Historiography of the Cold War Mutual assured destruction Pax Americana Pax Atomica South American Long Peace

References

Illustrations

Long Peace: Chart of combatant deaths in wars since 1800, showing relatively few combatant deaths after World War II. Excludes civilian deaths, which can make death tolls much larger.[12]
Chart of combatant deaths in wars since 1800, showing relatively few combatant deaths after World War II. Excludes civilian deaths, which can make death tolls much larger.[12]

Worked examples

Example 1 — a first encounter with Long Peace

Start with the simplest possible case. Write down what Long Peace claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Long Peace before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Long Peace ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Long Peace

In research
Long Peace appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Long Peace in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Long Peace is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1986 neologisms, Cold War historiography, Cold War terminology, so understanding it makes those chapters shorter.
In everyday life
Look for Long Peace outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Long Peace in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Long Peace means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Long Peace out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Long Peace in simple terms?

The "Long Peace" is a term for the unprecedented historical period of relative global stability following the end of World War II in 1945 to the present day. The period of the Cold War (1947–1991) was marked by the absence of major wars between the great powers of the period, the United States and…

Why does Long Peace matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Long Peace?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Long Peace.

Tags

  • 1986 neologisms
  • Cold War historiography
  • Cold War terminology
  • Historical eras

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