A problem for them was that diseases were spreading from livestock to humans
The answer is groups of Arab nomads because “bedouin” refers to arabic speaking, nomadic people from middle eastern deserts (in North Africa, the Arabian Peninsula, Jordan, Egypt, Israel, Iraq, Syria)
They beat them for no given reason. They starved them and they deprived them of water. Also, they wouldn't let them sleep.
In general, when anything is "merit based" it means that it relies strictly on the knowledge and ability of the person in question, instead of special privilege such as family connections. <span />