Which questions about risk should someone ask before making a big purchase? check all that apply.

How did the enlightenment change attitudes about existing political systems

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.

Why do you think jefferson thought lewis was qualified to explore the louisiana purchase? ?