Question: What year did the country, in which Ambrosius Blarer was known as an influential reformer, become a federal state of relatively autonomous cantons?
Sentence (from "Ambrosius Blarer"): Ambrosius Blarer (sometimes Ambrosius Blaurer; April 4, 1492 – December 6, 1564) was an influential reformer in southern Germany and north-eastern Switzerland.
Relevant evidence: Yes