Although specialization increases productivity , what is one disadvantage?

Only Mastering One Skill.

If you go throughout life specialized, you'll only have one trait. This will become an issue once you are older and need to know how to more things as the world and technology continue to evolve.

hello,

answer: a federal government has final authority on interstate/inter provincial  and international affairs, a confederation is one where the central/national government or authority is governing body what does not have final say over the same matters. hopefully this and i will try again if you don't like this answer : )

best of luck!