In this simple economic model with a closed economy there are three uses for GDP, (the goods and services it produces in a year). If Y is national income (GDP), then the three uses of C consumption, I investment, and G government purchases can be expressed as:National savings can be thought of as the amount of remaining money that is not consumed, or spent by government.ational savings should be split into private savings and public savings. A new term, T is taxes paid by consumers that goes directly to the government as shown here: (Y-T) is disposable income. (Y-T) less consumption (C) is private savings.
Canada is not part of the USA but Canada has border with the United States; however, Canada is a total different country with its own regulations.
Mexico is a part of North America. Maybe you are thinking of Northern America, which is a tricky area as sometimes Mexico is included and sometimes it is not. Northern America â¦ is the northern portion of North America, in which Canada and the United States are usually the two sole members.olitically: Mexico has always been considered part of North America and not central America, hence NAFTA (acronym of North America Free Trade Agreement, which includes Canada, Mexico and the USA) Conclusion: Mexico IS part of North America. + 7 others found this useful.