Chain of markets is a series of markets that are connected like links in a chain because products pass from one market to another.
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They also used sophisticated mathematical techniques for devising a calendar, for administration, and for accounting. In terms of using mathematics every day, the Egyptians were masters and devised some sophisticated techniques.
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3. Contributed to the development of representative democracy
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Living conditions in many of the city's tenements did endanger the health of residents. ... of the ideas that would influence the emerging field of public health. ... De Wolf's methods for preventing the spread of contagious disease ... of recently arrived Polish, Greek, Italian, and Eastern European families.
