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  2. History of water supply and sanitation - Wikipedia

    en.wikipedia.org/wiki/History_of_water_supply...

    In the Abbasid Caliphate (8th–13th centuries), its capital city of Baghdad (Iraq) had 65,000 baths, along with a sewer system. [49] Cities of the medieval Islamic world had water supply systems powered by hydraulic technology that supplied drinking water along with much greater quantities of water for ritual washing, mainly in mosques and ...

  3. Social distance - Wikipedia

    en.wikipedia.org/wiki/Social_distance

    Normative social distance: A second approach views social distance as a normative category. Normative social distance refers to the widely accepted and often consciously expressed norms about who should be considered as an "insider" and who an "outsider/foreigner". Such norms, in other words, specify the distinctions between "us" and "them".

  4. Social distancing - Wikipedia

    en.wikipedia.org/wiki/Social_distancing

    In public health, social distancing, also called physical distancing, [2] [3] [4] is a set of non-pharmaceutical interventions or measures intended to prevent the spread of a contagious disease by maintaining a physical distance between people and reducing the number of times people come into close contact with each other.

  5. History of Chicago - Wikipedia

    en.wikipedia.org/wiki/History_of_Chicago

    Between 1870 and 1900, Chicago grew from a city of 299,000 to nearly 1.7 million and was the fastest-growing city in world history. Chicago's flourishing economy attracted huge numbers of new immigrants from Eastern and Central Europe, especially Jews, Poles, and Italians, along with many smaller groups.

  6. Historical urban community sizes - Wikipedia

    en.wikipedia.org/wiki/Historical_urban_community...

    This article lists historical urban community sizes based on the estimated populations of selected human settlements from 7000 BC – AD 1875, organized by archaeological periods.

  7. Manorialism - Wikipedia

    en.wikipedia.org/wiki/Manorialism

    Life and work in medieval Europe : the evolution of medieval economy from the fifth to the fifteenth century. Harper torchbook, 1141. New York, NY: Harper & Row. Pirenne, Henri (1937). Economic and Social History of Medieval Europe. Harcourt Brace & Company. ISBN 0-15-627533-3.

  8. Chicago should set limits on buildings’ greenhouse gas ...

    www.aol.com/chicago-set-limits-buildings...

    The city should set limits on emissions from certain buildings, using an approach already in place in New York, according to the report from the Urban Land Institute Chicago.

  9. Outline of the Middle Ages - Wikipedia

    en.wikipedia.org/wiki/Outline_of_the_Middle_Ages

    Internet Medieval Sourcebook Project Primary source archive of the Middle Ages. The Online Reference Book of Medieval Studies Academic peer reviewed articles. Medieval Knights Medieval Knights is a medieval educational resource site geared to students and medieval enthusiasts. The Labyrinth Resources for Medieval Studies.