Together with the Wall Street Journal, the 'Heritage Foundation' publishes the annual Index of Economic Freedom. The Index measures how free a country's citizens are in terms of property rights, control over their money, freedom from regulation, and so on. The factors used to calculate the Index score are corruption in government, barriers to international trade, income tax and corporate tax rates, government expenditures, rule of law and the ability to enforce contracts, regulatory burdens, banking restrictions, labor regulations, and black market activities. A large amount of any of these will result in a lower score on the Index.
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