Compare and contrast vertical and horizontal integration

1. Compare and contrast vertical and horizontal integration.  What are some of the variables make each of these integrations valuable? Provide an example of a vertical and a horizontal integration that has happened recently. 

2.  In what circumstances should an organization consider diversification as a viable strategy? 

3.  What benefit does a global strategy provide an organization? Describe a situation when a global strategy would not be a viable solution for an organization.