At the beginning of the 21st century, where did most immigrants to the United States come from?
A) africa
B)europe
C)south america
D)north america

What potential crisis did eleanor roosevelt resolve on behalf of president roosevelt

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.

Although male citizens have tp enroll in the selective service,the draft has not been used since 1973