Law, legislation and stakeholders of books

Questions

1. How is copyright regulation on books in the world (continent)?
2. Are there any agreements on distribution of books and knowledge around the world (for ex. By the UN).
3. What has changed in regulation in e-books?
4. How are books censored over the past 10 years, and how (if it) is it done with e-books?
5. Who are the big stakeholders in printing and publishing companies?
6. What are the rights and ownerships of the authors?
7. How is piracy being handled, and what has changed in the book piracy over the last 10 years?