There are others such as Reduction of Costs i.e. Economies of Scale using complementary resources, Improved Management of target Company, Financing of Target Company, Tax Benefits i.e. increase tax shield, Diversification into other markets gaining market share/strengthening market share contribute as motives also. However, this essay will focus on the contribution of Economies of Scale as a motive, the theory behind the motive supported by the case study of Upjohn and Pharmacia and empirical evidence to counterbalance the theory. Secondly Market Share Theory, its contribution, which as Griffiths’ proposed may help the company withstand economic environment. Finally Value Discrepancy Hypothesis, the theory behind it illustrated by the AOL and the Warner Merger.