William Petty came up with a concept of GDP, to calculate the tax burden, and argue landlords were unfairly taxed during
The … See more

GDP can be determined in three ways, all of which should, theoretically, give the same result. They are the production (or output or value added) approach, the income approach, and the speculated expenditur… See more

GDP can be contrasted with gross national product (GNP) or, as it is now known, gross national income (GNI). The difference is that GDP defines its scope according to location, while GNI defines its scope according t… See more