A. revise the Articles of Confederation
<span>The purpose of the Constitutional Convention that met in Philadelphia beginning on May 25, 1787 was to amend the Articles of Confederation. It had, by that time, become clear that the Articles of Confederation were not a good enough constitution for the new nation. The convention was called to improve on the Articles. However, the convention was not called to do what it ended up doing. What it ended up doing was creating an entirely new constitution. This new constitution gave the federal government much more power than it had had under the Articles of Confederation.</span>
Answered this earlier: They were getting kicked out of their native lands, died from unfamiliar European diseases (like smallpox and measles), mistreatment and wars. <span>
</span>
The people were getting tired of the overarching rules, regulations, and taxes of the British Crown, perhaps no more so than in Boston where a massacre would occur. So a Tea Party would be held, declarations and Congresses made, then a war with shots ringing out from Princeton to Saratoga to Yorktown. But it would take much longer than this one decade to win that war and to form a true government. The American Revolution would seep into the next decade and the first President not in office til after that.
Comparative advantage. It is being able to produce goods by using fewer resources, at a lower opportunity cost, that gives countries a comparative advantage. The gradient of a PPF reflects the opportunity cost of production. Increasing the production of one good means that less of another can be produced.