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World economy

The world economy or global economy is the economy of all humans of the world, considered as the international exchange of goods and services that is expressed in monetary units of account. In some contexts, the two terms are distinct "international" or "global economy" being measured separately and distinguished from national economies while the "world economy" is simply an aggregate of the separate countries measurements. Beyond the minimum standard concerning value in production, use and exchange the definitions, representations, models and valuations of the world economy vary widely. It is inseparable from the geography and ecology of Earth. It is common to limit questions of the world economy exclusively to human economic activity and the world economy is typically judged in monetary terms, even in cases in which there is no efficient market to help valuate certain goods or services, or in cases in which a lack of independent research or government cooperation makes establishing figures difficult. Typical examples are illegal drugs and other black market goods, which by any standard are a part of the world economy, but for which there is by definition no legal market of any kind. However, even in cases in which there is a clear and efficient market to establish a monetary value, economists do not typically use the current or official exchange rate to translate the monetary units of this market into a single unit for the world economy since exchange rates typically do not closely reflect worldwide value, for example in cases where the volume or price of transactions is closely regulated by the government. Rather, market valuations in a local currency are typically translated to a single monetary unit using the idea of purchasing power. This is the method used below, which is used for estimating worldwide economic activity in terms of real United States dollars or euros. However, the world economy can be evaluated and expressed in many more ways. It is unclear, for example, how many of the worlds 7.62 billion people have most of their economic activity reflected in these valuations. According to Maddison, until the middle of 19th century, global output was dominated by China and India. Waves of Industrial Revolution in Western Europe and Northern America shifted the shares to the Western Hemisphere. As of 2017, the following 15 countries or regions have reached an economy of at least US$2 trillion by GDP in nominal or PPP terms: Brazil, China, France, Germany, India, Indonesia, Italy, Japan, South Korea, Mexico, Russia, Turkey, the United Kingdom, the United States and the European Union.


Downward harmonization

Downward harmonization is an econo-political term describing the act of adapting the trade laws of a country with an established economy "downward" to the trade laws of the country with a developing economy. This "harmonizing" may affect labor laws, human rights laws, minimum-wage, industry standards, quality control, anti-terrorism, etc.


Fourth World

The Fourth World is an extension of the three-world model, used variably to refer to Hunter-gatherer, nomadic, pastoral, and some subsistence farming peoples living beyond the modern industrial norm. Sub-populations existing in a First World country, but with the living standards of those of a Third World, or developing country. Sub-populations socially excluded from global society; The term is not commonly accepted. "Fourth World" has also been used to refer to other parts of the world in relation to the three-world model.


Global production network

Global Production Networks is a concept in developmental literature which refers to "the nexus of interconnected functions, operations and transactions through which a specific product or service is produced, distributed and consumed."


Global recession

A global recession is recession that affects many countries around the world - that is, a period of global economic slowdown or declining economic output.


Great Depression

The Great Depression was a severe worldwide economic depression that took place mostly during the 1930s, beginning in the United States. The timing of the Great Depression varied across nations; in most countries, it started in 1929 and lasted until the late 1930s. It was the longest, deepest, and most widespread depression of the 20th century. The Great Depression is commonly used as an example of how intensely the worlds economy can decline. The Great Depression started in the United States after a major fall in stock prices that began around September 4, 1929, and became worldwide news with the stock market crash of October 29, 1929, known as Black Tuesday. Between 1929 and 1932, worldwide gross domestic product GDP fell by an estimated 15%. By comparison, worldwide GDP fell by less than 1% from 2008 to 2009 during the Great Recession. Some economies started to recover by the mid-1930s. However, in many countries, the negative effects of the Great Depression lasted until the beginning of World War II. The Great Depression had devastating effects in both rich and poor countries. Personal income, tax revenue, profits and prices dropped, while international trade fell by more than 50%. Unemployment in the U.S. rose to 25% and in some countries rose as high as 33%. Cities around the world were hit hard, especially those dependent on heavy industry. Construction was virtually halted in many countries. Farming communities and rural areas suffered as crop prices fell by about 60%. Facing plummeting demand with few alternative sources of jobs, areas dependent on primary sector industries such as mining and logging suffered the most.

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