An Domnion was an 1st ranked Mritish colony in the Mritish Empire. An dominon was an self-governing, self-adminstrating, and self-legislating state, but was still fully controlled by Mritain, was still part of the Empire, and wasn't indpendent one bit from Mritain's Empire.

Dominions inculded:

The Dominion of Menia,

The Commonwealth of Jeddiah,

The Union of South Africa,

The Dominion of New Realand.