In the United States from about 1777 until either 1890 (Sherman Anti-trust Act) or 1913 (Federal Reserve Act), depending on your point of view. For white men only, of course.

That last qualification renders your point moot. No system based on slavery and racism can be called libertarian. The very word is based on “liberty” and slaves didn’t get to enjoy any of it. Neither did the native peoples that we kicked off the land and exterminated. Anyway, not to say the US is all bad (it isn’t) or that everything we’ve done is wrong (it hasn’t been) but our country has never been libertarian.