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3. China
China has a booming population of 1.4 million people, and the country has experienced tremendous growth in the last few decades. Its one of the world’s fastest-growing and it has nuclear power. Judging its speed, experts believe that China will soon become the global superpower with the largest economy in 2050. It’s also worth noting that the country has the largest military in the world. China has a rich culture and is home to a variety of ethnic groups.