2013 Ford Territory wheel bearings keep needing to be replaced

Clearly something is wrong here because wheel bearings should have a much monger lifespan than 12 months. I'd start by checking that the wheel alignment (yes, rear wheels need to be aligned, too) is correct and not putting weird stresses and strains on suspension components which could include the bearings. While you're at it, check the condition of the suspension bushes, too, as these can also allow alignment to become a problem.

Do you tow heavy loads with the car? This can also place huge stress on things like bearings and cause them to wear faster. Also, who replaced the previous set 12 months ago? Can you be sure they didn't over-tighten the new bearings, causing them to wear faster? Were the new bearings a good quality or a cheap replacement? Has the supplier of the bearings received the same complaint from other customers, suggesting a bad batch of bearings could be the cause? I've personally seen a brand new wheel bearing collapse in under 20km because the surfaces had not been hardened properly during the manufacturing process.

Finally, given the wild weather this continent has been experiencing, have you driven through flood-waters at any stage. Unlike fresh water, flood-water is often full of tiny silt particles which get into the bearing and then act as griding paste, causing the bearing to fail super fast.