What are the stages of corporation's life cycle

What are the stages of corporation's life cycle and how can a corporation's life cycle be extended? What is strategy implementation and what questions must strategy makers consider to begin the implementation process? What are some of the approaches a company can take to identify and prepare its people for important positions? It is important to assess the strategy-culture compatibility when implementing a new strategy. Do you think that culture follows strategy, or does strategy follow culture? In the response use a company to illustrate your points. What is six sigma? Why would a company want to implement it?