The counterculture's rejection of mainstream American values was expressed through its embrace of: a) unconventional appearance, music, drugs, and sexual liberation
b) song lyrics and popular sayings of the period, such as "turn on, tune in, drop out"
c) protest for civil rights, civil liberties, environmentalism, and the end of the vietnam war
d) all of the above

What do the discoveries of shells used in jewelry and a huge dredged canal tell us about the indus valley civilization?

Government powers not provided to the national government in the us constitution but are rather given to the states by the 10th amendment is called?

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.