In august, a democratic candidate for president was ahead in the polls. by november, the republican candidate took the lead. to what features of public opinion does this statement relate?
-direction

-intensity

or

-stability

What might balance federal and state powers present a problem

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.

1.3.6 how is the principle of the social contract reflected in the declaration of independence of the articles of confederation