According to the speaker, what are the four revolutions in media that have occurred over the last 500 years?

1. what is the electoral college? 




The government has the right to restrict the number of people who visit the white house. this is an example of a government exercising its

The graph shows a demand curve. what does the data shown in this graph represent? a decrease in quantity demanded as prices decrease an increase in price as quantity demanded decreases a decrease in income as quantity demanded increases an increase in quantity demanded as prices decrease