please answer me :)

1. Why did Apple make an announcment in 2012 about its manufacturing operations upcoming in 2013?

2. What qualitative factors would likely have been considered when Apple, Google, and Lenovo made their decisions to invest in U.S. manufacturing facilities? In other words, why would Apple, Google and Lenovo decide to manufacture products in the United States when all of these companies have well-established facilities and supply chains in China.

3. What chalenges will these companies likely face in manufacturing products in U.S plants?

4. What stakeholders are impacted either positively or negatively, from the decision to manufacture in the United States? How are these stakeholders impacted?

5. What ethical issues potentially arise from not producing in the lowest cost location?

Thank you