Which preposition to use with exploitations

of Occurrences 94%

The whole question resolved itself into this: should Canada be handed over to the licensed exploitation of a few hundred low-class camp-followers, who had done nothing to win her for the British Empire, who were despised by those who had, and who promised to be a dangerous thorn in the side of the new colony?

by Occurrences 10%

How can a democracy be possible without a knowledge of the control of the individually and socially subnormal, who, since they offer themselves to exploitation by the careerists, prove themselves the weak links in the chain of co-operation with an equal opportunity for all, that is the democratic ideal?

in Occurrences 10%

Exploitation in this second circle was not much less than in the first circle, because of less close supervision by the authorities.

after Occurrences 1%

If this is true, we should expect to find the master hunger specially active through the many chances presented for exploitation after the fall of feudalismbeginning, let us assume, with the invention of power machinerythe "Age of Steam".

Which preposition to use with  exploitations