What social structure was the foundation of africa earliest villages?
extended family
the city state
the patriarchal system
the martirchal system

Did the west show signs of cultural decline in the 20th century?

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.

The dravidians descended from people who lived in