How was the invention of the wheel important to the sumerians? a. it allowed them to conquer neighboring states. b. it made traveling with traded items easier and increased trade. c. it improved their communication and recordkeeping. d. it them to water their crops all year.

Why caused john quincy adams to write the monroe doctrine?

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.

How did agitators on both sides of the slavery issue make things worse? by putting out bounties on certain peopleby committing murderthrough their writingsby compromising on too many things