1. Can I become a vassal of another country? How?
2. Can I become a PU of another country? How?
3. Can I become a protectorate of another country? How?
4. Can I become a colonial nation of another country? How?
I want to tag switch to USA.
1) yes, either offer in a peace deal or accept a diplomatic offer (not sure ai will bother to send though)
2) yes, random chance on ruler death without heir, possibility of throne claim plus war but that's remote outside mp
3) yes, see 1
4) no