The correct answer is this one: "a. phenakistoscope." Invented in 1872, the first example of a phenakistoscope was produced. It showed the first illusion of movement, using a disk with a series of drawings around the edge, with the same object in slightly different poses. The answer is letter A.
To recap, self-interest and competition are very important economic forces. Self-interest is the motivator of economic activity. Competition is the regulator of economic activity. Together they form what Adam Smith called the invisible hand, which guides resources to their most valued use.
Because back then no liked blacks sadly
