Excel - Combine multiple columns into one column

Question

I have multiple lists that are in separate columns in excel. What I need to do is combine these columns of data into one big column. I do not care if there are duplicate ent

Answer 1

Function Concat(myRange As Range, Optional myDelimiter As String) As String 
  Dim r As Range 
  Application.Volatile 
  For Each r In myRange 
    If Len(r.Text) Then 
      Concat = Concat & IIf(Concat <> "", myDelimiter, "") & r.Text 
    End If 
  Next 
End Function