In Google Maps app (non-American version) it is already visible as “Lake Ontario (Lake America)”. Also Mapy.com has dual names.

Canadian-American border cuts the lake so dual name is obvious as Canada doesn’t have any intention to rename it.

Gulf of Mexico (Gulf of America) is the same situation. USA is the only country who changed the name so…

The other situation could be with cities or counties that are inside US territory.

Or take an example with Dept of War. Nobody abroad isn’t using Dept of Defense in their texts of anymore… (Btw Dept of War was since 1789 til 1949 then renamed to Dept of Defense.)

Different situation is with X. As the X is confusing for a lot of people, Twitter is added after slash to explain the situation (X/Twitter).

> In Google Maps app (non-American version) it is already visible as “Lake Ontario (Lake America)”. Also Mapy.com has dual names.

In Canada I'm seeing simply "Lake Ontario" still.