Basic-Bumblebee4668

Hey, so I am currently away from an austria campain where I ended the dual monarchy, and succeeded against Hungary, then my subjects, and finally Serbia and Romania. I noticed that my claims in serbia and romania made me annex them outright like my subjects, and I cannot release them as subjects (not that I would want to, because the non core manpower is so high). When I intervened in the italian civil war to end the italian state (they refused my demands), I also didn't get the opportunity to puppet them afterward (I am allied to them too). I am wondering if I am meant to just annex and occupy everything, because of my non core manpower, or if this just applies to the nations I have taken. Edit: for clarification I am wondering about territories I gain during wars other than my reunification and war against the belgrade pakt, such as my unification of italy and if I were to conquer bulgaria, ukraine, or other non german territories