The native habitat of the sawtooth oak tree is Japan, Korea, China and the Himalayan Mountain range. The tree was introduced to America in 1862. This oak probably derives its name from the distinctive sawtooth-edged leaves it produces.
Occidental are native people from the western hemisphere (Europe, North America, South America) Oriental are native people from the eastern hemisphere (the countries of Asia), although Oriental is now largely consider an offensive word and the preferred word is Asian. Below is a note from freedictionary.com about why Oriental is offensive
The term âUnited States residentâ means â (i) any individual who â (I) is a United States citizen or a resident alien and does not have a tax home (as defined in section 911(d)(3)) in a foreign country or (II) is a nonresident alien and has a tax home (as so defined) in the United States and (ii) any corporation, trust, or estate which is a United States person (as defined in section 7701(a)(30)).