In the 19th century, the Industrial Revolution cemented Great Britain's claims to global superiority, and later catapulted the United States into dominance. But they were not alone. Japan and Germany also arose as major industrial, military and political powers.
What's going on: In a transition that could be as momentous, the U.S. and China today are racing to master artificial intelligence. But it's no longer clear, as had seemed the case, that one or the other will hold the field to itself. According to a new study, the winner may be forced to share geopolitical sway with smaller nations like Israel, Russia or Singapore.