Neolithic Revolution as irrigation and deforestation which allowed the production of surplus food. Other developments found very widely are the domestication of animals, pottery, polished stone tools, and rectangular houses. These developments, sometimes called the Neolithic package, provided the basis for centralized administrations and political structures, hierarchical ideologies, depersonalized systems of knowledge (e.g. writing), densely populated settlements, specialization and division of labour, more trade, the development of non-portable art and architecture, and property ownership. The earliest known civilization developed in Sumer in southern Mesopotamia (); its emergence also heralded the beginning of the Bronze Age. The relationship of the above-mentioned Neolithic characteristics
Neolithic Europe BCE–3000 BCE) while in Northwest Europe it is just under 3,000 years (c. 4500 BCE–1700 BCE). Regardless of specific chronology, many European Neolithic groups share basic characteristics, such as living in small-scale, family-based communities, subsisting on domesticated plants and animals supplemented with the collection of wild plant foods and with hunting, and producing hand-made pottery, that is, pottery made without the potter's wheel. Polished stone axes lie at the heart of the neolithic (new stone) culture, enabling forest clearance for agriculture and production of wood for dwellings, as well as fuel. There are also many differences, with some Neolithic communities