If the U.S. became the undisputed superpower that it is...
If the U.S. became the undisputed superpower that it is today, it was primarily because of its technology, whether it is in transportation, agriculture, high-tech industry, medicine, etc.
If the U.S. became the undisputed superpower that it is today, it was primarily because of its technology, whether it is in transportation, agriculture, high-tech industry, medicine, etc.