Select the marketplace where you expect the majority of your sales to occur.
Your book will be sold in all marketplaces, regardless of your selection. Your choice here may affect the categories available to you in the next section For example, selecting amazon.com as a Primary Marketplace may give you access to ‘Football (American)’, whereas on amazon.co.uk, ‘Football’ relates to soccer, so a book about American Football needs to be categorized under ‘American Sports’.
You can change the primary marketplace at a later date, even after publication.

