What happened to the natural resources as the west was developed ?

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.

Which fundamental right is protected in this excerpt ?

Which of the following had the most significant impact in supporting portugal's e fforts to control the indian ocean spice trade