The high gross national product (GNP) of the United States is a direct reflection of its wealth.
Gross national product is one of the main macroeconomic indicators of the system of national accounts.
Unlike the Gross Domestic Product, which reflects the total value of all final goods and services created in the country, the gross national product reflects the total value of goods created only by its residents, regardless of their geographical location.
Would weaken the hypothesis beacuse it would show that many droughts indicated in the stalactites do not always show a collapse in society. Societes could therefore cope with droughts.
