World economy

All people in the world work together.

We make and buy many things. This is the world economy. We trade goods and work in many ways.

Long ago, China and India were very strong. Then, new machines changed things in other lands. This moved more work to new places.

Sometimes, things change for everyone. In 2020, the world economy went down. This happened because of a sickness.

Now, things are growing again. Most people live in middle lands. It is a big, busy world!

The world economy is how all people work together. It includes making things and buying goods. It also includes trade between different nations.

In the past, China and India were the leaders. They produced most of the world's goods. Later, the Industrial Revolution changed things. This was a time of new machines. It moved much of the work to Europe and North America.

Money is used to measure the economy. Experts often use purchasing power to compare values. This helps them see what money can really buy.

Wealth is not shared the same way everywhere. For a long time, there were very rich and very poor countries. This gap was largest in the 1970s. Now, most people live in middle-income countries. Still, some people own much more than others. In the 2000s, the richest 1% owned 40% of global assets.

In 2020, the economy went down. This was due to the COVID-19 pandemic. Cities felt this the most. By 2021, the economy began to grow again.

The world economy is the system of all human activity on Earth. It includes making things, buying goods, and trading between different nations. This system involves work, managing money, and all kinds of financial deals. Some people look at the economy of one country alone. Others look at how all countries work together as one big group. This global system is tied to the geography of our planet.

Experts use money to measure how much is being produced and used. They often use a special way to compare values called purchasing power. This method helps them see what money can actually buy in different places. It is better than using official exchange rates, which can change a lot. This helps turn different local currencies into one single unit like the US dollar. This makes it easier to see the whole world's activity at once.

History shows us how the leaders of the world economy have changed. Until the middle of the 19th century, China and India led the way. They produced most of the goods that the world used. Then, the Industrial Revolution brought new machines to Western Europe and North America. This shifted the power to the Western Hemisphere. Today, many different countries share the wealth of the world.

Many large countries make up a big part of the global economy today. As of 2025, twelve countries and two groups hold at least 2.0% of the economy. These include places like China, the United States, Japan, and India. Other big parts include the European Union and the African Union. Brazil, Canada, France, Germany, Indonesia, Italy, and Russia are also very important. These nations help drive the growth of the whole system.

Wealth is not spread out the same way for everyone. Between 1820 and 2000, the gap between rich and poor grew by almost 50%. This gap was largest around the 1970s. Since then, the gap has been getting smaller. Most people now live in middle-income countries. However, a very small number of people still own a huge amount of wealth. In 2014, the 85 richest people had as much as 3.5 billion people combined.

The world economy refers to the total system of human economic activity across the entire planet. It encompasses the production of goods, the consumption of services, and the management of financial transactions. This system includes all work conducted within individual nations and the complex trade that happens between them. While some researchers distinguish between the "international economy" and the "world economy," the latter is often used as an aggregate of all national measurements.

Measuring the world economy is a complex process because values vary widely across different regions. Economists often use Gross Domestic Product (GDP) to represent the total value of production. To compare different currencies fairly, they frequently use Purchasing Power Parity (PPP). PPP is a method that translates local market valuations into a single unit, such as the US dollar or euro. This method is preferred over official exchange rates because official rates do not always reflect the true worldwide value of goods.

Economic activity is not always found in legal, regulated markets. The world economy includes the "black market," which involves the trade of illegal goods like drugs. Even without official government data or cooperation, these transactions are part of the global system. Furthermore, the world economy is deeply connected to the geography and ecology of Earth. The way people produce and exchange goods is limited by the natural resources and environments available to them.

Historical shifts have radically changed which regions lead the global economy. Until the middle of the 19th century, global output was dominated by China and India. However, the Industrial Revolution changed this balance of power. Waves of industrialization in Western Europe and Northern America shifted economic dominance to the Western Hemisphere.

Today, the economic landscape is much more distributed among many different nations and collectives.

As of 2025, several major players account for significant portions of the global economy. Twelve specific countries and two collectives hold at least 2.0% of the global economy in either nominal GDP or PPP terms. These include Brazil, Canada, China, France, Germany, India, Indonesia, Italy, Japan, Russia, the United Kingdom, and the United States. Additionally, the European Union and the African Union are major economic entities.

These nations drive much of the world's current production and trade.

Wealth distribution has seen massive changes over the last two centuries. Between 1820 and 2000, global income inequality increased by almost 50%. This rise in inequality occurred mostly before 1950, while the level of inequality remained relatively stable after that. Experts distinguish between "between-country inequality" and "within-country inequality." Global inequality reached a peak in the 1970s, when the world was split into "rich" and "poor" countries with little overlap. Since then, the trend has shifted toward a "unimodal" distribution, meaning most people now live in middle-income countries.

Despite these trends, extreme wealth concentration remains a significant factor. A study by the World Institute for Development Economics Research found that the richest 1% of adults owned 40% of global assets. Another report from Oxfam International stated the richest 1% owned 48% of global wealth. In 2014, the 85 wealthiest individuals held combined wealth equal to the bottom half of the world's population, which includes about 3.5 billion people.

Recent global events have also caused major fluctuations in economic stability. During the COVID-19 pandemic in 2020, the global economy decreased by 3.4%. This was an improvement over the World Bank's initial prediction of a 5.2% decrease. Because cities account for 80% of global GDP, they were hit hardest by this decline. However, the economy showed resilience by rebounding with an estimated 5.5% increase in 2021.