if i am correct the answer should be the great depression.
bartering of goods for each other
Explanation:
After the decline of the Indus valley civilization, Vedic age started in the Indian history. Generally dated, between 1500-600 B.C. as most of the modern scholars agree on this date. References point to the use of barter system and metallic currency in that age. In the Vedic Age, the cow stood as a higher unit of barter and cowrie-shells were used for lower purchase
Had heavy taxes? what do you mean "that they"?
One of the major challenges that James Watts steam engine helped with was "<span>A. Fueling factories using something other than wood</span>" since this greatly revolutionized production productivity.