Answer: Synergy
Step-by-step explanation:
Synergy simply refers to an interaction or a cooperation that exists between two or more organizations, in order to have a greater combined effort which is vital for the achievement of organization goals.
When there is a combined effort of the organizations, the achievement of success would be possible. Therefore, United Airlines and Continental Airlines merging because the companies had little overlap in their domestic routes and hubs is an example of synergy.