Bejing, China

China has overtaken the U.S. in outbound mergers and acquisitions for the first time, underscoring a global buying spree driven by the Chinese economy's growth over three decades and Beijing's program to encourage companies to buy assets and technology from abroad.

In the first nine months of the year the total value of mergers and acquisitions by Chinese companies jumped 68 percent year on year to $173.9 billion, according to data by Dealogic.