I think I have an idea, will test it later....
Say you put in each cell a condition referencing the result of your
drop-down box. So, you choose "Africa" and the dopbox's linked cell in A1
says Africa.
Go to the second spreadsheet and put a condition. Spmething like
=IF([Spreadsheet1]All!$A$1="Africa",[Spreadsheet1]All!B3, B3) this last
condition keeps the original (or updated) result when you change choices in
the dropdown box.
Remains to be seen if you'll have to close the worksheet every time you
change choices and then reopen it because, otherwise, you might get a
"Worksheet Open" error and it won't update.
Don't know, just occurred to me in the shower, I'm in a rush and will test
it later.