What restrictions and laws enacted by the black codes effectively extend the racist doctrines of pre-civil war slavery? What freedoms are notably denied under the code?

Which nation most to bail out greece’s failing economy?

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.

How did the economic impacts of the great depression differ in the united states and in the soviet union?