The Hume Edwards Principle

If we're just trying to explain why there are any contingent objects whatsoever at all. It seems as though you aren't really able to cite some contingent object because that's presupposing the very thing we're trying to give an accounting of. Even if you have an infinite regress right you could still ask why are there any of those things that are infinitely linked up in such a way? Yes because this is sometimes been called the Hume Edwards principle. If you go on and infinite them it still seems as thoughyou don't really have a satisfying explanation of why even like firstly why is it Euclid's elements?