What was nikola tesla contribution to electricity?

Explanation:

Nikola Tesla was a Serbian-American engineer and inventor who is highly regarded in energy history for his development of alternating current (AC) electrical systems. He also made extraordinary contributions in the fields of electromagnetism and wireless radio communications.

separate but equal was a legal doctrine in united states constitutional law according to which racial segregation did not violate the fourteenth amendment to the united states constitution, which guaranteed "equal protection" under the law to all people. under the doctrine, as long as the facilities provided to each race were equal, state and local governments could require that services, facilities, public accommodations, housing, medical care, education, employment, and transportation be segregated by race, which was already the case throughout the states of the former confederacy. the phrase was derived from a louisiana law of 1890, although the law actually used the phrase "equal but separate

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a) "how old man winter was driven back " and "ormuzd and arimanes"

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