HELP PLEASE AND FAST please

What was new about the writing system developed by the phoenicians, and why was this important to the growth of knowledge and spread of ideas?

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.

56: 58 the assembly line was a system through which items were mass-produced in a flow.