Which state was formed when five of the northern counties in virginia decided not to secede from the union?

Government powers not provided to the national government in the us constitution but are rather given to the states by the 10th amendment is called?

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.

What restrictive measure required voters to pay to vote