Which of the following gave the United States all or part of 18 current states and two Canadian provinces?

What can you conclude was a benefit of living a more settled life for prehistoric man? a. more food choices b. more freedom c. less work d. simpler lifestyle !

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.

Which of the following was a bold new idea expressed in the declaration of indenpendnce?