The correct answer here would be the option C.
The United States since the Industrial Revolution have been an industrial and manufacturing society. But, over the years their industry shifted from manufacturing to services, as now instead of factories the large number of people is employed in the service industry. The shift happened among other things, the cheaper labor in different countries where the factory owners have decided to set up shop.
The proclamation of 1763 came out of the Treaty of Paris after the Seven Years War, so the British could incorporate lands ceded by the French as a result of their loss. The stationery soldiers were to establish a boundary between the new lands and the lands of the Native American, and to protect the colonizers forms their attacks.
The colonizers were unhappy because they lost the chance to get lands for their own, and because they couldn't commerce freely with the Native. Britain could have left the colonizers to adventure in strange lands and be massacred by the Native Americans, but couldn't afford to lose power over this new lands, over the colonizers and the Native.
what? i don't understand what you are asking of saying.
Containment is a geopolitical strategic foreign policy pursued by the United States. It is loosely related to the term cordon sanitaire which was later used to describe the geopolitical containment of the Soviet Union in the 1940s. The strategy of "containment" is best known as a Cold War foreign policy of the United States and its allies to prevent the spread of communism after the end of World War II.