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The beginning of the 21st century was the rise of a global warming, global economy and Third World consumerism, increased private enterprise and terrorist attacks. Many great and many bad things happened in the current century. Many natural and man-made disasters made their impact on the world.
In the 21st century the effects of social development have affected different countries and different social groups differently. Although social development upgraded life standards of population.
The main challenges in the 21st century are: climate change, plastic pollution in the oceans, natural hazards, air pollution, hunger and increased inequalities.
Technology in the 21st century has enabled to humans to make strides that our ancestors could only dream of. People in the 21st century live in a technology and media-suffused environment.
The world population was about 6.1 billion at the start of the 21st century and reached 7.8 billion by March 2020.
Economically and politically, the United States and Western Europe were dominant at the beginning of the century. By the 2010s, China became an emerging global superpower and the world's largest economy. Bitcoin and other cryptocurrencies are increasing in popularity worldwide.
The 9/11 attack on the Twin Towers, Hurricane Katrina, Same-Sex Marriage Legalisation, Haiti Earthquake, The Arab Spring, Brexit