🌍 List of Boundary Lines Between Nations

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🌐 List of Boundary Lines Between Nations

Boundary Line	Between Nations	Specific Details
Line of Control (LoC)	India and Pakistan	Military control line in Jammu & Kashmir
Line of Actual Control (LAC)	India and China	Undemarcated boundary on the northern border
McMahon Line	India and China	Drawn in 1914; separates Arunachal Pradesh from Tibet
Durand Line	Afghanistan and Pakistan	Drawn in 1893 when Pakistan was part of British India
Radcliffe Line	India and Pakistan	Demarcation during Partition in 1947
Maginot Line	France and Germany	Defensive fortification before World War II
Hindenburg Line	Poland and Germany	Used during World War I
Siegfried Line	East France and Germany	German defense line during World War II
Order-Neisse Line	Germany and Poland	Defined post-World War II boundaries
Blue Line	Israel and Lebanon	UN-drawn border for withdrawal verification
Green Line	Israel and its Neighbors	Separates Israel from Egypt, Jordan, Lebanon, Syria
Purple Line	Israel and Syria	Post-1949 Armistice line
Mason–Dixon Line	Maryland and Pennsylvania (USA)	Colonial boundary in the US
Curzon Line	Poland and Russia	Eastern boundary proposal post WWI
Military Demarcation Line (MDL)	North Korea and South Korea	Also called the Armistice Line (38th Parallel)
Mannar-Haime Line	Russia and Finland	From the Winter War (1939–1940)
16th Parallel North	Angola and Namibia	Colonial-era demarcation
17th Parallel North	North and South Vietnam	During the Vietnam War
20th Parallel North	Libya and Sudan	African border demarcation
22nd Parallel North	Egypt and Sudan	Part of international border
25th Parallel North	Mauritania and Mali	West African boundary
26th Parallel North	Western Sahara and Mauritania	Border in North Africa
31st Parallel North	Iraq and Iran	Defines part of their boundary
35th–45th Parallels North	Various U.S. states	State boundaries across southern and central US
49th Parallel North	USA and Canada	Longest undefended border; also known as the "Medicine Line"

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🧠 Tips to Remember

1. LoC vs LAC:

   • LoC – Military control line (India–Pakistan)

   • LAC – Undefined boundary (India–China)

2. Historic War Lines:

   • Maginot Line (France–Germany): Pre-WWII

   • Hindenburg and Siegfried Lines: German defense strategies during World Wars

3. Political Partition Lines:

   • Radcliffe Line: India–Pakistan Partition

   • Durand Line: Now separates Pakistan and Afghanistan

🎯 Quick Revision Table (At a Glance)

Line	Countries
LoC	India–Pakistan
LAC	India–China
McMahon Line	India–China (Arunachal)
Durand Line	Afghanistan–Pakistan
Radcliffe Line	India–Pakistan
38th Parallel	North Korea–South Korea
49th Parallel	USA–Canada
Maginot Line	France–Germany
Hindenburg Line	Germany–Poland
Order-Neisse Line	Germany–Poland