The first step to selling in another region is to create a selling account in a marketplace in that region. After you complete registration, your original selling account will be linked to your selling account in the new region.
You can link one selling account per region. If you have accounts in multiple marketplaces in a region, choose one account to link.
Here's how to start:
Visit the Sell Globally page in Seller Central.
You can select this under the Inventory tab.
Select the region to which you would like to link.
Select the option to create a new selling account.
Click Register now. For the European Union, you will be redirected to register for a selling account on the Amazon.co.uk marketplace. For North America, you will be redirected to register for a selling account on the Amazon.com marketplace. Please note: Your business and contact information may be populated automatically in registration fields based on your previously entered information. You can enter new information in these fields, as well.
After you have completed registration, your accounts will be automatically linked.
When you return to the Sell Globally page, you will see a message stating that your accounts are linked.