A) Each nation should be made up of one ethnic group.
Answer:
The legal system includes unwritten laws derived from ancient
custom and usage .-D.
People started making and using tools. These tools enabled them to start the agricultural revolution and settle around river valleys. Now, they could just live at a single place instead of running around searching for food. They could grow their own food, and still go and hunt when necessary.
The traditional economic system was based on the direct exchange of goods and services, for example: you give me a shirt that you have and I give you the shoes! So, from the options the best answer is: passing clothes down from older to younger brother.
It’s okay man just try doing your best and good luck
