it was too hot and dry
"of a herd of cattle led by ranchers" as you have used it above is already the possessive for of "a herd of cattle led by ranchers"! For example: The herd of cattle which was led by the ranchers bought a farm. The farm is now owned by the herd. It is the herd's farm. It is the farm of the herd of cattle led by ranchers.
Herd
They herd cows and people ride them.
they like to farm
maybe to herd sheep or cattle
Mesopotamia's economy is hard to reserch. that's it.
sit
hard
paleolithic people had to farm, harvest, and herd
hard
it was first developed to record farm surpluses in Ancient Mesopotamia.
Sumer, babylon, assyria, Chaldean