Thesis: The financial globalization for the past decades witnesses the global imbalance phenomenon on which the deficit current accounts by some large advanced economics are continuously financed by some developing economies with the high output growth rates and the scarce capital stocks. On the theoretical ground, the Neo-Classical growth model implies that one economy with scarcity of capital would have a high marginal product of capital and a high autarky interest rate therefore, at the integration with the free mobile capital, that country would experience the net total capital inflows so that the domestic interest rate equals that to the rest of world’s rate (Lucas 1990). Furthermore, one economy growing faster than the rest of the world would also have a higher investment demand and should experience the inflows of net total capitals (Gourinchas and Jeanne 2015). The global imbalances are the result of the heterogeneity in the patterns of savings and investments across countries. Indeed, one country experiences an inflow of capital if its saving is less that its investment: that country borrows from the rest of the world to finance the excess investment demand. Similarly, one country would lend to the rest of the world if its saving is higher than its investment. The thesis would employ the productivity growth to shed the refresh lights on this heterogeneity across countries. […]