link button and datalist for many countries

Hi 
I know this case is little completed and i have already record a clip to explain it more, hopeful :-( with a short description here the page of CateShow should show the products that hade been selected from the drop down list depending on the contry that he choose it, thats mean one page should show many items for many countries and and the menu should be programmed to give a command to showCate page to show items depending on selected country.
I am so sorry to bother you but i become crazy and i coudlnt find a solution 
https://www.youtube.com/watch?v=V_n9KRyqy3k&feature=youtu.be