Further class segmentation and ultimately speciation once populations have grown so far apart that they can no longer procreate. I can't recall the title of an

Further class segmentation and ultimately speciation once populations have grown so far apart that they can no longer procreate. I can't recall the title of an Australian gov't commissioned paper on the subject but this was ultimately the conclusion. The paper also pointed out that domestic attempts to regulate these acts would ultimately be futile because people were already traveling abroad (specifically Italy) to seek out reproductive/eugenic services that were not legal in Australia.