Can I "merge" my minecraft worlds?
I wanted to ask if there is a way to merge multiple worlds into one. I want to combine my nether, end and overworld maps together
You can try using structure blocks, they will save the structure as an NBT file, which you can put into other words.
Limits
Java is limited to a 48x48x48 space, so this might not be too practical as so many structures would be required to do this, assuming you have a fairly large area you want to copy.