I was watching Different Strokes which comes on after Facts Of Life. In the episode Willis gets bad grades and cant play on the school basketball team until he gets is grades up. So Mr Drummond hires a tutor. The tutor asks Arnold what the original name of New York City was. "Nieuw Amsterdam". I looked it up and yep. As an aside the larger area besides the Island was called "Nieuw Nederland".
https://simple.wikipedia.org/wiki/New_York_City
https://simple.wikipedia.org/wiki/New_York_City