Hunting and gathering in the context of "Work (human activity)"

Work or labour (labor in American English) is the intentional activity people perform to support the needs and desires of themselves, other people, and/or organizations. In the context of economics, work can be seen as the human activity that contributes (along with other factors of production) towards the goods and services within an economy.

Work has existed in all human societies, either as paid or unpaid work, from gathering natural resources by hand in hunter-gatherer groups to operating complex technologies that substitute for physical or even mental effort within an agricultural, industrial, or post-industrial society. One's regular participation or role in work is an occupation, or job. All but the simplest tasks in any work require specific skills, tools, and other resources, such as material for manufacturing goods. Humanity has developed a variety of institutions for group coordination of work, such as government programs, nonprofit organizations, cooperatives, and corporations.

A proto-city is a large, dense Neolithic settlement that is largely distinguished from a city by its lack of planning and centralized rule. The term mega-sites is also used. While the precise classification of many sites considered proto-cities is ambiguous and subject to considerable debate, common examples include sites of the Pre-Pottery Neolithic B culture and following cultures in the Fertile Crescent such as Jericho and Çatalhöyük, sites of the Cucuteni-Trypillia culture in Southeast Europe, and of the Ubaid period in Mesopotamia. These sites pre-date the Mesopotamian city-states of the Uruk period that mark the development of the first indisputable urban settlements, with the emergence of cities such as Uruk at the end of the Fourth Millennium, B.C.

The emergence of cities from proto-urban settlements is a non-linear development that demonstrates the varied experiences of early urbanization. Whilst the proto-urban sites of the Ubaid period in northern Mesopotamia anticipate the social and political developments of the first Sumerian cities, many proto-cities show little correlation with later urban settlements. The development of cities and proto-cities and the transition away from hunting and gathering toward agriculture is known as the Neolithic Revolution.