Answer:
The main reasons for policy intervention by the government are:
To correct for market failures.
To achieve a more equitable distribution of income and wealth.
To improve the performance of the economy.
Step-by-step explanation:
To correct for market failures: This is achieve by creating regulation institutions for the most important sectors in any given economy e.g. Federal Reserve, Treasury Department
To achieve a more equitable distribution of income and wealth: This is the aim of a develop economy to allocate the resources where needed and for that some countries rely in the government capability to prevent Monopoly creation or to protect its Internal Labor market.
To improve the performance of the economy.: In order to meet the economical agenda of any given government the institutions use variation on the interest rate, the government expenditure or the tax policies.