How was Persia divided in 1907?

The empire was divided into 20 provinces to try to stop any single region from becoming too powerful. Each province was ruled by a governor, called a SATRAP, three zones, a large Russian zone to the north, and two smaller zones, one which neither country dominated, and a British zone to the south. Afghanistan was less of a trade partner to Russia, but there were concerns about the border, in relation to crime, refugees and diseases

omg i dont know oops sorry

this is a good question! i'll do some research and come back when i have the answer!