The civilization known as kush arose in nubia around what time?

Which of these reasons describes why spain was motivated to compete with portugal

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.

Identify whether each scenario describes a drawback of an advantage of trade regulation. benefits of trade regulations