During the 1500s portugal was unable to defend their trading posts in asia against the more powerful

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.

The information box says that the han added 4,000 miles of wall.refer to the mileage scale.how can this be true?

The tuskegee institute offered training to african americans in business and finance industrial and agricultural skills medicine liberal arts