What expectations did the indian school officials make of the parents of their students?

How was george washington able to defeat the british in the battle of trenton and princeton

During the era of european expansion, what was the biggest reason for spain’s push for exploration?

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.