It was the proclamation that forbade colonial settlements west of the Appalachian mountains. It put a stress on the relations between Britain and the Colonies because they believed that they had a right to continue to spread and take more land. This caused a good bit of problem between them.
To be a President you need 270 electoral votes
Types of mass media: Newspaper, radio, magazines, the Internet, and television.
economic idk specifically what u mean by effective but in effective in damage there was a lot to be rebuilt after the war and the cost of bullets and guns was bad to