Answer:
Enviroment
Step-by-step explanation:
Often the place The bad people chose the camps was based on where they were it was often remote and cold so even if you do escape you wouldent likely survive. another was railroads. As you know the bad people kinda ran outta money so the just built around railroads instead of making new ones. but one of the big factors was "Is The weather Extreme?" they used this so they could hurt the jewish people more than they already were hurt. they also put them remote to cover it up this was by far the biggest factor.