Answer: True
Step-by-step explanation:
With the on-going drive towards Globalization, companies took advantage to raise more capital by listing across various stock exchanges in the world. The result of this became that the securities market became more correlated.
This had the advantage of granting many companies enough capital that they became Multinational companies but it had the disadvantage of reducing the benefits of international portfolio diversification because the companies would be able to influence the movement of stock across the nations that they are listed in. Where before you could trade in Japan if there were losses in the NYSE, with a company being on both and suffering, both exchanges would feel it.