Question

Which country has the highest number of ethnic groups? What are the four main ethnic groups there?

Answer 1

1 Papua New Guinea 1.0000
2 Tanzania 0.9530
3 Democratic Republic of Congo 0.9330
4 Uganda 0.9300
5 Liberia 0.8990
6 Cameroon 0.8870
7 Togo 0.8830
8 South Africa 0.8800
9 Congo 0.8780
10 Madagascar 0.8610
11 Gabon

Answer 2

I might be wrong, but I think the 4 main ethnic groups are Caucasian, Hispanic, African-American, and Asian.