Answer:
Pleasing the guards, Doing your work, working hard, and not getting sick or weak.
Explanation:
If you were doing your work you would please the guards and if you weren't sick or weak you wouldnt be killed because you couldnt work anymore. If you were a fit male you would have the most chance of survival.
He called it the Iron curtain because Russia separated from Europe. Hope this helps!
The <span>medieval warm period brought forth bumper crops and caused a population explosion.</span>
In Kraków during World War II