Important Boundary lines
17th Parallel North Vietnam and South Vietnam .
24th Parallel The border, which Pakistan claims for demarcation between India and Pakistan. .
26th Parallel A circle of latitude which crosses through Africa, Australia and South America. .
38th Parallel The parallel of latitude which separates North Korea and South Korea. .
49th Parallel USA and Canada. .
Durand Line Pakistan and Afghanistan .
Hindenburg Line Germany and Poland .
Macmahon Line India and China .
Marginal Line Russia and Finland .
Mason-Dixon Line Demarcation between four states in the United State. .
Medicine Line Canada and United States. .
Order-Neisse Line Poland and Germany .
Radcliffe Line India and Pakistan. .