Could Trump really rename Lake Ontario? Yes, but here’s why he shouldn’t

U.S. President Donald Trump has threatened to rename Lake Ontario as "Lake America," sparking questions about the ancient history of the lake's name. Trump suggested the change on Tuesday amid escalating tensions with Canada over a trade dispute. The name "Lake Ontario" has deep roots, tracing back centuries before either Canada or the United States existed.

Its origins are rooted in an Iroquoian language, translating to "sparkling waters." The lake has been known by various names throughout history, including those used by First Nations before European contact, and French and British explorers also used different names for it during their conflicts in North America. The name "Ontario" was adopted centuries before the United States declared independence and long before the province of Ontario came into being.

The threat of renaming the lake follows Trump's recent executive order to rename the Gulf of Mexico as the Gulf of America. Historians note that while the United States and Canada could conceivably use different names for the same geographic feature, doing so would not necessarily require the other country to change its own naming conventions.

The history associated with the lake's name has cultural and historical significance, particularly for Indigenous communities who have lived along its shores for centuries. Changing the name could be seen as erasing that history. There could also be practical consequences for businesses and organizations that have incorporated the lake's name into their operations.