What order does the country name sort by in Chinese? I'm quite confused to see how the country name is sorted in Chinese. 

The pictures below are names of countries that show at the first and last of the total list. Ignore China and its administrative regions since it automatically puts them at the top of the list from my country settings.
Sort by radical.  

不 belongs to 一 radical (#1) therefore listed first

黑 belongs to 黑 radical: (#203) therefore listed last

If the first characters are the same, the radicals of the second characters will be ranked