What is a value chain?

In international business Rugman, Alan M. & Collinson, Simon, Richard M., International Business, 6th Edition.
1. In conducting an internal environmental assessment, why would an MNE want to identify its physical resources and personnel competencies?
2. What is a value chain? How can this chain be used in an internal environmental assessment?
3. What is a value chain? How can this chain be used in an internal environmental assessment?
4. Why do MNEs use an international division structure? Are there any drawbacks to this organizational arrangement?
5. When would a company opt for a mixed structure? Why? Defend your answer.
6. In what way is implicit versus explicit communication important in understanding how home-office managements coordinate international activities
7. In what way are economic integration/globalization and national responsiveness important to MNE strategies?
8. In the entertainment industry, which is more important, integration or national responsiveness?