There was a series of huge droughts that ruined much of the produce and of the grains. They had to sell what little they had in order to survive and make up for losses but they were getting killed by imported goods or by grains from other places of the US that weren't hit so severely. This is why the grain prices started dropping which caused many hardships.
The writers of the US Constitution put into practice the idea of separation of powers by establishing three branches of government: the executive (responsible for the enforcement of laws), the legislative (responsible for the passage of laws), and the judicial (responsible for the deliberation of laws). These separate powers then became imbued with the system of checks and balances where no single branch can act completely independently from the other. Take, for example, the appointment of Supreme Court judges.
Appointing a Supreme Court judge is a responsibility of the President, the head of the executive branch. The president will pick a judge thereby influencing the judicial branch. However, the choice must first be ratified by the legislative branch, thereby giving them a deal of power in deciding who is going to become a Supreme Court judge. So there you can see that all branches have a role in this process, none of which can occur without the other branch having an impact.
The colonists claimed that they were being taxed unfairly and were not given proper representation. These acts and other subsequent taxation policies led to the famous phrase "taxation without representation." The colonists that were making this claim were individuals that were associated with the Sons of Liberty like Samuel Adams and other thinkers of the time like Thomas Paine.
Its C I believe.
Hope it helps