What changes have occurred in the last 10 years that affected art? What about the last 20 years? The last 50 years? What do you think is the most important change that occurred in the last 50 years that affected the arts? Explain your choice using examples from your text (paraphrasing only please, no direct quotes), and include the source at the end of your post in APA format (including page numbers, even though you are not quoting exactly).