5 - 4 autonomous tribal provinces and 1 federal protectorate
2) How much autonomy do they have?
Extremely limited. The Alsten Protectorate is directly controlled by the federal government, while the four autonomous provinces have control over provincial infrastructure, clan territory allocations and dispute settlements, and cultural initiatives.
3) Do they have a capital, a flag and a coat of arms?
All of the provinces are run out of the national capital of Alsten, though the provincial governments may have occasional meetings in the major settlements of their province. The Alsten Protectorate doesn't have any identifiers, as it shares a government with the entirety of the Protectrate, but each of the four autonomous provinces uses traditional sythen sigils where appropriate