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The force of gravity between two objects is proportional to the
Real GDP
Gross Domestic Product adjusted for inflation, providing a more accurate picture of an economy's size and how it's growing over time.
National Income
The total income earned by a country's residents and businesses, including wages, rent, interest, and profits.
Government Purchases
Expenditures made by local, state, or federal government sectors on goods and services that directly absorb resources.
Net Exports
The difference between a country's total exports of goods and services and its total imports of goods and services; net exports can be a positive or negative value.
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