Could you be referring to the holocaust? In that case it would have been the Jewish people.
Short grasses that grow naturally on steppes provide grazing for cattle, goats, horses, camels, and sheep. Sometimes steppes are overgrazed, which occurs when there are more animals than the land can support. When the short grasses of the steppe are plowed under for agriculture, the soil can erode very quickly.
A) Kids could be payed less
The simple answer here is because of slavery.
