Nikkei is generically a person of Japanese heritage. In Japanese, you'd say "Nikkei America-Jin" for Japanese American.
An Amerasian is a person of mixed American and Asian parentage.
japanese-american
...A person of mixed parentage, especially the offspring of a French-Canadian and an American indian.
A persons race depends on their parentage and not their location.
See website: Japanese-American internment
Seward made the Japanese-American Treaty.
There has not been an American and Japanese period.
Which american?
No. He is an American of Japanese ancestry (Japanese-American), originally from the State of Hawaii.
There are several differences between Japanese Google and American Google. The main difference is that Japanese Google is written in Japanese, where as American Google is written in English.
The profession of Derek Lam is one of a successful designer.Derek Lam is an American fashion designer. He was born in San Francisco, California and is of Chinese American parentage.
His nationality is American (United States of America, from the State of Hawaii), of Japanese ancestry, which makes his ethnicity Japanese-American.