Specific Formula Executed In Column Of Data Depending On Selected Value In Cell

I have a sheet with a country in it in A1 (validation list).

Depending on the country in A1 a country specific IF command has to be executed on a column1 with first cel = A3. This IF command also relies on the values in column 2 and 3 on the same row. (B3 and C3 are in the IF cmd)

I taught to do it like this : =IF($A$1="Spain";$A$5;0) with A5 being the country specific IF command which should be executed when spain is selected. however when I do this, this only works for the first cell ( I cannot drag this formule down, since it will always give the value calculated in column 2 and 3 on row1.

I'm not sure if the best way to 'select' the country specific IF cmd is with another IF command..