Answer:
ur mom when she uses a shoe
Earl Warren's court help secure equality for citizens of the United States by expanding civil rights, civil liberties and the power of the judiciary in a dramatic manner. The court for instance found segregation in public schools to be a violation of the 14th amendment and declared it unconstitutional
Thomas Edison invented the most widely available version of the light bulb. With the advent of AC/DC electricity cities soon began to have streetlights. This would make for a good crime deterrent.
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Beginning after Columbus' discovery in 1492 the exchange lasted through the years of expansion and discovery.