The Byzantine Empire lied on the trade route from Asia to Europe: all the land trade from Asia, such as Indian spices and Chinese silk would travel to Europe trough the Byzantine Empire. This means not only that they had a prime access to the new goods, but they could also make money by providing the merchants place to sleep and eat.
They kept taking their land and violating the treaties they signed. And they threatened them and gave them no option but to keep moving west.
Answer: The agreement contains a covenant that runs with the land.
Explanation:
The theory under which the new farmer can successfully recover half of the costs for maintenance from the rancher us when the agreement contains a covenant which runs with the land.
In this scenario, it should be noted that the elements for both the benefit to run and the burden to run are present. In such case, the doctrine of detrimental reliance can not be applicable here.