What does the term revolving door refer to?

What film is responsible for the creation of the pg-13 rating?

Apex q: arturo wants to increase his political participation beyond voting in elections. which action would accomplish this? answers: a. paying taxes b. starting a community cleanup program c. getting a public library card d. canvassing for a political candidate

During he 1840s, more americans than british settled in the oregon country. how do you think this settlement influenced negotiations with the british over the territory