During the hundred years war monarchies fought over a throne

a. labor shortages
b. control of peasants
c. food shortages
d. control of territory

The correct answer is - d. control of territory.

Control of territory has always been one of the main factors for waging war. This is due to multiple reasons:

- the bigger the territory, the more people you control, thus you gain more work force, and more military force.

- the bigger the territory, the more resources you have at disposal, thus becoming less dependant on other countries.

- and also we have the status and showing of power, as bigger territory usually means and stronger country.