This is what the Lord God says: “These are the boundaries you are to use when allocating ownership of the land to the twelve tribes of Israel (Joseph is to receive two allocations.)
The descendants of Joseph had become two tribes, Manasseh and Ephraim. The Levites were not given any land, only towns to live in and pasture for their flocks and herds.
This was the territory allocated to the tribe of Ephraim, by families. The boundary of their allocation ran from Ataroth-addar in the east to Upper Beth-horon
Then the descendants of Joseph came to Joshua and asked him, “Why have you given us only one allocation—only one share of the land—when there's so many of us because the Lord has blessed us so much?”