The Durand Line is a border demarcation established in 1893 between British India and Afghanistan. Named after Sir Mortimer Durand, it was intended to define the spheres of influence for both regions. The line stretches approximately 2,640 kilometers and runs through mountainous terrain, making it a significant geopolitical boundary. Today, the Durand Line separates Pakistan and Afghanistan. It remains a contentious issue, as many in Afghanistan do not recognize it as an official border, leading to ongoing disputes and tensions between the two countries. The line has implications for security, trade, and ethnic identities in the region.