Border crossings are independent of length. But they actually do have trade, and even people crossing the border. https://www.voanews.com/a/korean-industrial-

Border crossings are independent of length. But they actually do have trade, and even people crossing the border. https://www.voanews.com/a/korean-industrial-zone-reopens-as-northsouth-ties-improve/1750375.html https://www.voanews.com/a/korean-industrial-zone-reopens-as-...