What act challenged the idea of laissez-faire economics?

What was its opportunity cost? What is 1972 Eisenhower silver dollar worth? Which of these elements contributes toward globalization of the economy? Which class created no economic wealth? What is a market economy based on? How does balance of trade differ from balance of payments? Why do you need agriculture? What is the full form of MRP PRISE? How can government policies of subsidization and taxation affect both plant location and growth? How does demand curve moved for commodity? What are two contributions that small Enterprise make? Which of the following accuratly describes a situation in which consumers have elastic demand? Is belly inflation dangerous for babies? Why does the number of business closures decrease during a economic boom? How does network externalities act as a barrier to entry? What is value of 3 cent envelope? Differentives between consumer and industrial cooperatives? What is the definition of stock? What were some of the warning signs that the US economy may not have been as strong as the stock market indicated? What are 3 industries that produce raw goods?

What act challenged the idea of laissez-faire economics?