GDP is actually an indicator that shows how the economy of a country is doing be comparing the local good and service produce or offered within a particular period in a country as compared to what they import from outside.GDP or Gross Domestic Product is the indicator that shows how much a certain country earned in one year. The country's earnings will be calculated based on the value of total production (industry, agriculture, etc,) and other revenue sources (tourism, tax, customs, etc,).