The good places are either the British Isles or New York!
I would think either Feet or Yards. But since Feet are more colloquially used, I'd pick Feet.
It established a way to transport textiles and agriculture trade from Africa to Europe, during the early-mid 1800s it was a big accomplishment.
The answer is simple Neptune because it is the only blue planet.
Hawaii is in the Hawaii-Aleutian Time Zone.