Hat effect might high worker productivity have on determining the earnings of workers? a) the productivity of workers might result in little to no impact on the earnings. b) the more productive workers are, it might increase their earnings. c) higher earnings might increase the productivity of workers. d) earnings might be solely determined by productivity. eliminate

Plz ? ? 20 points for this question ! hhjc6

What made the settlement of oklahoma territory different from that of other territories

The rise of advertising in the 1920s. i am good with seeing how advertisements shape the roaring twenties and how it developed a new way of life through modern days. but i am not sure what the details of advertising in the 1920s were. if possible can you send me links (preferrably credential links) to sources that maybe show like the first company to start advertising through the radio, how advertising benefits (statistics graphs), etc.