How are movies marketed and distributed? Have these aspects changed between the studio and independent systems?

American Cinema
How, typically, is a movie financed, and why are todays movies so expensive to make? How are movies marketed and distributed? Have these aspects changed between the studio and independent systems? Develop your argument in your own words, but drawing on specific details from the readings and videos for support. When quoting or paraphrasing, be sure to document and credit your source.