Transferring Data From Multi Item Listbox Into A Cell

I have a Listbox (Listbox2) in column C. The listbox allows users to select multiple items (in this case it is countries). So the user could select 1 or 20 countries based on the previous criteria.

What I would ideally like is for the next column (column D) to automatically list the selected items without having to use a command button in the actualy cell. However, I could put a command button at the end to say "Confirm" which would then transfer the above into the relevant cells.

This is an excel file, and each row would works the same. Basically users are entering products for set up row by row, so the file could be 10 rows or 200.

Just to be clear, it would look a little like this:

Drop Down Listbox
Column C Column D

Canada (Selected) Canada, USA
South Africa
USA (Selected)