title: NSArray displaying in UITableView
body: <p>I have a UITableView that should display some data (Countries for example), clicking one of them should load new UITableView which will display another data relevant to the cell I had clicked on (for example cities in the country), clicking the city should display me information about it.
  So, this everything will of course use UINavigationController, but how must I arrange the data for Countries->Cities?</p>