What is the mechanism through which a state makes and enforces its policies?

If you discover that an aggressive driver is following you,you should not? a.drive home or to work b.drive to a crowded location c.flash your lights and honk your horn

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.

45 were the 1920s a “return to normalcy” or a “time of great change”? submit it in a letter format.