Which preposition to use with ameliorations

of Occurrences 75%

Europe is laid waste, hundreds of thousands of men murdered, and practically every human being in the occidental hemisphere made to suffer, not for the amelioration of a race, but in order to satisfy the idiotic ambitions of a handful.

in Occurrences 8%

Now as our country gentlemen and members of Parliament are always much inclined to take lawyer's advice, and are besides fully persuaded and convinced that there are no abuses whatever in England and that everything is as it should be, there is no hope of any amelioration in this particular.

to Occurrences 2%

-sphered with Platoor, with Harrington, framing "immortal commonwealths"devising some plan of amelioration to thy country, or thy speciesperadventure meditating some individual kindness or courtesy, to be done to thee thyself, the returning consciousness of which made him to start so guiltily at thy obtruded personal presence.

after Occurrences 1%

" This unfortunate state of things prevailed until the children were grown, and with more or less amelioration after that time.

among Occurrences 1%

But still, in the matter of drinking, the turn of the century witnessed some social amelioration among the upper classes.

for Occurrences 1%

To be assured that people in one part of the world are better off than those in another, will tend inevitably to bring about ameliorations for the latter.

Which preposition to use with  ameliorations