Which would likely be the least biased account of the december 7, 1941 , attack on pearl harbor

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.

During the age of global expansion and encounter, many individuals brought about change. how might we prepare for changes today?