Who invented the piston-driven steam engines that powered all kinds of machines in the industrial revolution?
a. edmund cartwright
b. james hargreaves
c. james watt
d. richard arkwright

the authority to tax.

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.