Glossary of definitions:
despotism - a form of government in which the ruler is an absolute dictator (not restricted by a constitution or laws or opposition etc.) tyranny - the government or rule of a single person (dictator) or absolute ruler. spectrum - a broad range of varied but related ideas or objects, the individual features of which tend to overlap so as to form a continuous series or sequence federalist papers - a series of 85 articles advocating the approval of the United States constitution (1780's). oligarchy - a form of government where political power effectively rests with a small elite segment of society distinguished by royalty, wealth, family, military powers, etc. The word "oligarchy" is from the Greek words for "few" and "rule".
A differential is a device, usually but not necessarily employing gears, capable of transmitting torque and rotation through three shafts, almost always used in one of two ways. In one way, it receives one input and provides two outputs; this is found in most automobiles. In the other way, it combines two inputs to create an output that is the sum, difference, or average, of the inputs.
In automobiles and other wheeled vehicles, the differential allows each of the driving roadwheels to rotate at different speeds, while for most vehicles supplying equal torque to each of them.
Performed by Jay Ungar, the composer. Made famous because of its association with Ken Burns' documentary The Civil War, during which this melody is played a remarkable 25 times - most notably during the reading of Sullivan Ballou's letter to his wife.
by Nathan Krämer