作者: Lawrence A. Plummer , Aviad Pe’er
DOI: 10.1007/978-1-4419-1191-9_19
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摘要: From the earliest records of ancient civilizations to present-day accounts knowledge-economy, geographic concentration people and their activity has been always will be a constant feature human existence. In broad historical terms, in villages, towns, cities served many cultural, security, commercial ends (Kotkin, 2005). Dense pockets enable shared culture, ease enforcement rule law, facilitate common defense, allow efficient economic exchange, free acquire specialized skills knowledge. modern era, defensive walls have given way provision public goods operation local markets open all buy sell consumer necessities.