In the 1880s, the War of the Currents began. Thomas Edison developed direct current, or DC, a type of electricity that flows in one direction. By 1887, DC was in use around the United States. It had some drawbacks, though. Converting it to lower or higher voltages was difficult; that is, the current's force couldn't be changed easily. Transmitted at the low voltage needed for use in homes and businesses, it lost power after traveling only a mile. Meanwhile, Nikola Tesla was working with alternating current, or AC. AC reverses direction many times per second and can be changed to different voltages. At high voltage, it can be transmitted efficiently, traveling hundreds of miles with little energy loss. Because of its advantages, AC triumphed by the end of the nineteenth century.

When i was young enough to still spend a long time buttoning my shoes in the morning, i'd listen toward the hall: daddy upstairs was shaving, in the bathroom, and mother downstairs was frying the bacon. they would begin whispering back and forth to each other up and down the stairwell. my father would whistle his phrase, my mother would try to whistle, then hum hers backi drew my buttonhook in and out and listened to it -know it was "the merry widow." the difference was, their song almost floated with laughter. how different from the record, which growled from the beginning, as if the victrola were only slowly being wound up. they kept it running between them, up and down the stairs where i was now just about ready to run clattering down and show them my shoes. what is the effect of the parallelism used in the above excerpt? it establishes the rhythm of a duet to echo the song. it expresses the same ideas. it mirrors opposite ideas. it is a paradox.

What did mark twain contribute to the history of the novel? select all that apply.

In the excerpt, what does turner not fully understand because he is a child? the value of lizzie’s friendship the deeper racial conflict the severe danger he is facing the history of malaga island