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Population growth is the increase in the number of people in a population or dispersed group. Actual global human population growth amounts to around 83 million annually, or 1.1% per year. [2] The global population has grown from 1 billion in 1800 to 7.9 billion in 2020. [3]

e. The world economy or global economy is the economy of all humans of the world, referring to the global economic system, which includes all economic activities which are conducted both within and between nations, including production, consumption, economic management, work in general, exchange of financial values and trade of goods and services.

Globalization is primarily an economic process of interaction and integration that is associated with social and cultural aspects. However, disputes and international diplomacy are also large parts of the history of globalization, and of modern globalization.

"We hold the view that categories emerging markets, advanced economies, developing countries, BRICS, Next Eleven or the Growth Markets are all labels belonging to classification schemes that either have outlived their usefulness or are unlikely to ever have any," the two analysts said.

In economic growth literature the term "convergence" can have two meanings. The first kind (sometimes called "sigma-convergence") refers to a reduction in the dispersion of levels of income across economies. "Beta-convergence" on the other hand, occurs when poor economies grow faster than rich ones.