I could be wrong but I believe it is C.) On plantations
I would either answer sanitation(pollution) or corruption
The answer is B) Inca. Extensive road network across plains, deserts and mountains reaching all corners of the empire was one of the notable features of the Inca empire like terraced farming, canals, crop rotation and irrigation as agricultural innovations. It allowed smooth military operations, trading, and the use of runners or chasquis.
Types of farming include subsistence farming, mixed farming, nomadic herding, commercial plantation, livestock rearing, etc.
Yes, this is especially true during World War Two when people like ethnic Germans now living in Poland were persecuted after the country capitulated to Germany. Another example is the Bosnian war where countless people were attacked from either side and based of their nationality, despite sharing ethnicities.
