Which of the following is not a concept of democracy

Which is not characteristic of capitalism? a) market e-commerce b) supply and demand c) freedom of competition d) a society without social classes

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.

What was the major factor that caused the colonies to eventually insist on freedom of religion?