Which preposition to use with naturalised

in Occurrences 13%

Unfortunately the word Kindergarten while being naturalised in England had two distinct meanings attached to it.

at Occurrences 2%

The "Ménagier" adds several others to the above list, including blay, shad, roach, and gudgeon, but, above all, the carp, which was supposed to be a native of Southern Europe, and which must have been naturalised at a much later period in the northern waters (Figs. 100, 101, and 102).

as Occurrences 1%

For example, they obtained from other countries traps, engines, and hunting-weapons; they introduced into France at great expense foreign animals, which they took great pains in naturalising as game or in training as auxiliaries in hunting.

behind Occurrences 1%

We confess we love in comedy to see an audience naturalised behind the scenes, taken in into the interest of the drama, welcomed as by-standers however.

Which preposition to use with  naturalised