3 marks of existence: conditioned vs unconditioned things?

The Wikipedia page for "the 3 marks of existence" differentiates between "conditioned things" and "unconditioned things" like so: > The three marks are: > 1. sabbe saṅkhārā aniccā — "all saṅkhāras > (conditioned things) are impermanent" > 2. sabbe saṅkhārā dukkhā — "all > saṅkhāras are unsatisfactory" > 3. sabbe dhammā anattā — "all dharmas > (conditioned or unconditioned things) are not self" The Buddha said "I teach one thing and one thing only. Suffering and the end of suffering." Within that context: 1. What is the difference between a "conditioned thing" and an "unconditioned thing"? 2. How does that difference give meaning to the 3 marks? 3. How does this meaning point towards "the end of suffering"?