After the colonists won independence from Britain there main concern was...
Answer: having a government that was too strong and powerful.
The issue with the British government was that before the Revolution their government was too strong. They felt that it could abuse their rights and that they could do nothing to stop it. They wanted their new, independent country to have a government that would not have enough power to abuse their rights.
Historians affect history because the bias of historians will affect the way that they record events.
Whether intentional or unintentional, many historians include bias in their writing when recording events. Bias is your personal beliefs or attitudes skewed for or against a topic that influence your writing. If a historian includes this in their writing about an event, it can change the way that the event is perceived by the public. Many historians relay the facts in a similar manner, but it is the bias that makes their stories unique from one another and also how they affect history.
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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.