How did violent migration affect Eurasia?

Which document did the second continental congress send king george iii to refaffirm colonist allegiance to him but not to parliament

Who led the continental army in the final decisive battle of the revolutionary war at yorktown

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.