You are probably getting an "undefined method 'cities' for #<Array:blah 
blah>" error.  Address each hierarchy level in turn...

<% @names.each do |name| %>
  <% name.cities.each do |city| %>
    <%= city.local_area %>
  <% end %>
<% end %>

<% @names.each do |name| %>
  <% name.countries.each do |country| %>
    <%= country.state %>
  <% end %>
<% end %>

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