Announcement reposted from Amazon United States:
Eligible North America Unified Accounts can now expand listings to Brazil and start selling seller-fulfilled orders or remote fulfillment with FBA. If eligible, you’ll see Brazil as an option in the store switcher at the top of Seller Central.
With a North America and Brazil Unified Account, you can conveniently switch between Amazon.com, Amazon.ca, Amazon.com.mx, and Amazon.com.br seller tools in Seller Central to list products and manage orders in each store.
If you choose not to sell in the Brazil store, you may still see Brazil listed in the store switcher. This doesn’t impact your account and is only visible to indicate that you’re eligible to sell in Brazil.
When you sell in Brazil, you’ll be subject to the Brazil Amazon Services Business Solutions Agreement.
To learn more, go to the North America and Brazil Unified Account or Guide for selling partners from out of Brazil.
Note: Selling with FBA in Brazil is only available to accounts with Brazil listed as their reporting country, or accounts that signed up on Amazon.com.br.