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Advantages that explain this evolutionary success include a relatively larger brain with a particularly well-developed neocortex, prefrontal cortex and temporal lobes, which enable high levels of abstract reasoning, language, problem solving, sociality, and culture through social learning.

The spread of humans and their large and increasing population has had a profound impact on large areas of the environment and millions of native species worldwide.

The rapid advancement of scientific and medical understanding in the 19th and 20th centuries led to the development of fuel-driven technologies and increased lifespans, causing the human population to rise exponentially.

Though most of human existence has been sustained by hunting and gathering in band societies, domesticating plants and animals, thus allowing for the growth of civilization.

These human societies subsequently expanded in size, establishing various forms of government, religion, and culture around the world, unifying people within regions to form states and empires.

Humans are uniquely adept at utilizing systems of symbolic communication (such as language and art) for self-expression and the exchange of ideas, and for organizing themselves into purposeful groups.Humans create complex social structures composed of many cooperating and competing groups, from families and kinship networks to political states.

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