1. what is the most widely used source of
demographic data on the u. s. market?

answer:

the u.s. census bureau is the leading source of statistical information about the nation's people. our population statistics come from decennial censuses, which count the entire u.s. population every ten years, along with several other surveys.

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.

whats the question? im not quite understanding your question.