Describe the different Effects of Westward expansion from 1844-1847.

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.

Enter the word you receive when you completed the river valley civilizations activity

In a few sentences, explain how the medici family contributed to the renaissance.