title: Same subcategory for all Main categories in Wordpress
body: <p>I have a question about category in Wordpress.
  I have a website about travel, so there have many place, so I use category for each place, and in each place there are the same some sub-catergories. Are there anyway, which I just create sub-categories one time and apply it for all main-categories, because sub-categories is same in all main-categories.</p>
  
  <p>For example:</p>
  
  <ol>
  <li>New York : Food, Nightlife</li>
  <li>London : Food, Nightlife</li>
  <li>Paris : Food, Nighlife</li>
  </ol>
  
  <p>With New York, London, Paris is main categories level 1, and Food, Nightlife is sub categories level 2. As you see, sub-categories same for all main categories. Because I have many main categories, so I want to find a fast way to do this.</p>
  
  <p>Thank for helping!</p>