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Important Boundary Lines of the World
A compact, tabular revision of the world's named international boundary lines and India's frontier lines, the countries they separate and their significance, for CAPF geography and internal security
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At a glance
SubjectGeography
RevisionGeographyBoundary LinesBordersInternal SecurityPaper 1
One screen per section. Cover the right column and test yourself. Named boundary lines recur in both geography and the CAPF-distinctive internal security questions, so master the line to the pair of countries. India's own frontier lines carry an added security and human-rights dimension, covered in depth in border management of india.
| Line |
Between |
Note |
| Radcliffe Line |
India and Pakistan; India and Bangladesh |
Drawn 1947 by Sir Cyril Radcliffe at Partition |
| Durand Line |
Pakistan and Afghanistan |
Drawn 1893; disputed by Afghanistan |
| McMahon Line |
India and China (in the eastern sector, Arunachal Pradesh) |
Drawn 1914 (Simla Convention); rejected by China |
| Line of Actual Control (LAC) |
India and China |
De facto military line; not formally demarcated |
| Line of Control (LoC) |
India and Pakistan (in Jammu and Kashmir) |
Ceasefire line of 1949, renamed LoC by the Simla Agreement 1972 |
| Actual Ground Position Line (AGPL) |
India and Pakistan (Siachen sector) |
Beyond grid point NJ9842 |
| Line |
Between |
| Hindenburg Line |
German defensive line on the Western Front in France (First World War; German name Siegfriedstellung) |
| Maginot Line |
France and Germany (French inter-war fortifications) |
| Siegfried Line |
Germany's western fortified frontier (facing France) |
| Oder-Neisse Line |
Germany and Poland (post-Second World War) |
| Mannerheim Line |
Finland and Russia (Finnish fortifications) |
| 38th Parallel |
North Korea and South Korea |
| 17th Parallel |
Former North Vietnam and South Vietnam |
| 49th Parallel |
United States and Canada (much of the boundary) |
| 24th Parallel |
A line claimed by Pakistan in the Rann of Kutch dispute with India |
| Mason-Dixon Line |
Historic line between northern and southern United States |
| Line |
Significance |
| International Date Line |
Roughly along the 180-degree meridian; crossing it changes the calendar day |
| Equator (0°) |
Divides Northern and Southern Hemispheres |
| Tropic of Cancer |
23.5° North; passes through eight Indian States |
| Tropic of Capricorn |
23.5° South |
| Prime Meridian (Greenwich) |
0° longitude; basis of GMT |
| Indian Standard Time meridian |
82.5° East, passing near Mirzapur (Uttar Pradesh) |
| Neighbour |
Approximate border length |
Forces / note |
| Bangladesh |
About 4,096 km; India's longest land border |
Guarded by the BSF |
| China |
About 3,488 km along the LAC |
Guarded by the ITBP |
| Pakistan |
About 3,323 km |
Guarded by the BSF |
| Nepal |
About 1,751 km; open border |
Guarded by the SSB |
| Myanmar |
About 1,643 km |
Guarded by Assam Rifles |
| Bhutan |
About 699 km |
Guarded by the SSB |
| Afghanistan |
About 106 km (across Pakistan-occupied territory) |
Notional |
For the forces and their mandates see the five capfs quick facts and the five capfs in depth.