Why were magazines the first "national" media?

Who founded Crisis, and why was it an important magazine?

Who were the "muckrakers?" What was the focus of their stories? Why did the muckraking movement end?

What magazines did Henry Luce start? What was the notable focus of each magazine?

What are the differences between the more traditional men's magazines, like Esquire and Playboy, and newer titles like Maxim and Men's Health?

What is a consequence of magazines using super-thin models? What are some of the recent reactions to this trend?

What is native advertising? Why is this a potential conflict of interest? 

What are the major trends in magazine publishing today? What are some alternative ways to access magazine content?