[ligeplodore]

With the way globalism works, there won't be any more superpowers.
Could be a company, but more likely a congolomerate of many companies.

The EU will fall apart in civil war.
Russia will grow together with China, in an economic race like a cold war.
USA will crumble like a paper house, all it has is it's past merits (few) and it's reputation.
Japan and Korea will follow China agains't Russia, taking over all the companies in Russia (oil,gas,mines)
China will build up a middle class, unions, general social welfare.
With that welfare, complains will come, complaints about not enough work and too much illiteracy.
After a while it will fall like USA.
It's stuff that comes and goes, there's always ups and downs.
There's no telling who or what might reign in a hundred yrs.
Most likely some kind of transnational conglomerate though.