Everybody in Germany is from one ethnic group or another, so the question could be simplified to ask where most Germans live, which is in the major cities and urban regions of Germany. If you wish to ask specifically about individuals in Germany who have a non-German ethnicity, such as Turks, Dutchmen, Spaniards, etc. you will need to be more specific about which minorities you wish to ask about.
Most ethnic groups share a common culture which is their main connection point. Each of the native ethnic groups had their unique culture which they shared and some cut across the board to other ethnic groups.
Colonizers ignored ethnic groups when drawing political borders. Most countries have diverse ethnic groups.
Mostly European countries and countries with a history of colonization by Europeans. Christianity has spread all over the world, and includes people of most ethnic groups. That does not mean that most ethnic groups study Christianity.
nigeria
Most New World countries (the Americas) have rather peaceful relations between ethnic groups as do most European countries. Africa and Asia, by and large, have acrimonious relationships between ethnic groups.
Germany's most dominant ethnic group is German, which makes up 91.5 percent of the population. Turkish is the second largest ethnic group.
India
Most of the fisherman were Scandinavians and Finns.
The most ethnic groups
The primary ethnic groups in the United States that had influence at the time of independence were the English, Scottish, and Dutch.
No. Though the Germans and Scots-Irish were two large ethnic groups in the colonies, the English were the most numerous.
There are over 300 ethnic groups in Nigeria. The most famous three ethnicities in Nigeria, and the ones with the most political clout are the Hausa Fulani, the Yorubá, and the Igbo.