William the conqueror and his successors did a. introduce common laws, customs, and language b. establish a 12 member jury and court system c. make the central government more efficient d. establish the english parliament with two houses

the difference is that white collar worker performs skills like worker as a scientist or well blue collars do physical work and they do services like being a cook.

frederick william of brandenburg-prussia trained his son, frederick, to be a hardy soldier. but frederick disliked rifle shooting and horseback riding. unlike his father, he was interested in french literature. he enjoyed poetry and music and, like some others of the enlightenment, he scoffed at religion. his father thought him soft, frivolous and unmindful of his duties. and when frederick refused to put his signature on a right to succession, for a few moments his father strangled him.