St. Basil the Great was the bishop of Caesarea Mazaca in Cappadocia, Asia Minor (modern-day Turkey. That would mean he was probably of Greek origin.
St. Basil is a "precongregational" saint. He was declared a saint by popular opinion long before a formal process for canonization existed.
St. Basil the Great is a pre-congregational saint. He was declared a saint by popular acclaim before there was an official procedure in place for canonization.
It is either catholic or orthodox, which is very similar to Catholicism.
It's in Russia/ Moscow.