Scientific advancements, developing countries, trade ,agriculture and society.
Once upon a time when Taj Mahal was built the west was passing through the age of renaissance This has brought in industrial revolution while agrarian societies did not advance much and remained as so called developing countries. Agricultural products their storage, processing and distribution largely suffers from losses of technical procedures. This results in compulsive selling by farmers and hoarding by the hoarders: the main business in developing world some 100 years ago and still continues. "Money makes the Mayor go"
Trade is basically purchasing the crop produce in bulk at crop…