this type of relationship is a many to many relationship.
since more than one member may also cover the same country, it is a many to many.
For a many to many relationship, you need to have a linking table.
A linking table is a table used to create the relationship between the member and country.
memberCountryID - Primary Key
memberCountryMemberID - int - relates to the primary key column of the member table
memberCountryCountryID - int - relates to the primary key column of the country table
you would use the data assist manage relational table behavior to manage the relationships in the linking table.
Andrew reed posted this tutorial for working with the manage relational table behavior: