1 shale
2 schist
3 conglomerate
4 granite
High density of people in Hong Kong, New york City, all big citys in India like Delhi or calcuta
The countries that belong to the same ethnic group are :
B. Lesotho
D. somalia
E. Swaziland
Those three countries are dominated by Digil and Rahanweyn ethnic group that live primarily as farmers
hope this helps