Hãy thống kê những lý thuyết truyền thông đại chúng quan trọng và nguồn gốc của những lý thuyết này?

Gettysburg address question. what is the purpose of this address?

What was the main purpose of one of the first world organizations

Rational ignorance suggests that a. voters are ignorant on issues that are not of special interest to them b. voters do not pursue information about issues before voting c. low voter turnout is due to a lack of understanding of the platforms of each political party d. voters are uninterested in the electoral process