Why can't there be 3 conjoined twins?
Because usually when you have conjoined twins their side by side or back to back. So where would it go? But maybe its possible.
Why are there so many conjoined twins in Asia?
its through hereidity
The first conjoined twins?
Mary and Eliza Chulkhurst (1100-1134) (also known as the Biddenden Maids) from England. They are the earliest known set of conjoined twins.
The first ever conjoined twins?
Eng and Chang Bunker