In 25 years, will the US still be world's #1 military power or will the USA be replaced by another world power?

As I understand it, the World's #1 military power is replaced about every hundred years. I believe Portugal, then Spain, then France, then England, followed by the USA. Will China be next, or maybe Russia?

In 25 years, will the US still be world's #1 military power or will the USA be replaced by another world power?
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