Explicit Mertens' Theorems for Number Fields and Dedekind Zeta Residue Bounds II: Unconditional Estimates.

We obtain unconditional, effective number-field analogues of the three Mertens' theorems, all with explicit constants and valid for $x\geq 2$. To this end, we also state related unconditional bounds, with explicit constants, for the residue of the corresponding Dedekind zeta-function at $s=1$.