One man decided that border in a matter of a few weeks having never been to India before. https://en.wikipedia.org/wiki/Radcliffe_Line https://en.wikipedia.org

One man decided that border in a matter of a few weeks having never been to India before. https://en.wikipedia.org/wiki/Radcliffe_Line https://en.wikipedia.org/wiki/Radcliffe_Line He left after drawing the line, burning his papers and not accepting payment. So nobody really knows why the border was decided to be where it is yet untold billions have been spent defending it and lighting it up. Oh, and that border cost ~500,000 lives.