What event happened first, the Ryukyu Kingdom being conquered, or The Tokara Islands being returned to Japan?
return the  Ryukyu Kingdom being conquered ;return the  Tokara Islands being returned to Japan ;return when  was  #1 ;return when  was  #2 ;return which is lowest of #3 ,  #4
['select', 'select', 'project', 'project', 'comparison']