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Railroad tycoons were the early industrial pioneers amassing or overseeing construction of many large railroads through the early 20th century. The names of the leaders are, James Hill, Jay and George Gould, Cornelius Vanderbilt, Edward Harriman, and Collis P. Cornelius Vanderbilt was a famous industrialist who worked in railroads and shipping.
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It limited the power of the monarchy and protected citizens' freedom
It was much lighter and easier to carry unlike the coins they normally used.
The answer would be B.. Market
Market Economic system is an economy in which The decisions regarding any economic activity are based on market's supply and demand.
Unlike in command economic system where the government will tell their citizens exactly what to produce and what to sell, Market Economic system provided a free environment for the citizen to do whatever they want.
NB : Japan's industrialized free market economy is the second largest in the world