No but in Treaty of Lousanne all of the minority groups agreed Turk and this application isn't forced.
In Cambodia, there really is no one ethnic group, but the majority are Khmer. =)
The primary ethnic group in Morocco is Arab, but there is a sizable (about one fifth) minority Berber population.
it means that you choose one ethnic group over the other
Judaism
one ethnic group was almost eliminated
That is mixture of ethnic groups.
One term that would /could be used in such a descriptive manner is the word "nation."
There are a few advantages involving ethnic similarity. One such advantage is being able to be indistinguishable while with a large number of people of a similar ethnic background. Another advantage is that the ethnic food of a group similar to one's own is usually almost the same sans a few ingredients which are usually just spices.
Portugal & Spain
ethnocracy
Yes, but it's actually spelled Afrikaans. It's related to Dutch, and it's one of the languages of South Africa.
Practically every ethnic group imaginable is in the US. The largest ethnic groups include German, Irish, African-American, English, Mexican, Italian, Polish, French, Native American, Scottish, Dutch, Norwegian, Swedish. Other minorities include Russian, Chinese, Japanese, Ukrainian, Korean, Canadian, Cuban, Spanish, Brazilian, and Salvadorian.