The boundary line between ?Russia-Finland is called the Mannerheim Line.Finland constructed a defence wall against the Soviet Union. The Finns declared independence in 1917, following the October Revolutions. Despite the fact that Russia recognized Finland?s independence, it intended to reassure the new state by creating a borderline against their less-than-trustworthy neighbours.

The boundary line between ?Northern USA(Excluding Alaska) and Canada. is called the Medicine Line.The United States of America and Canada share this boundary. The 49th Parallel is also a border between the United States and Canada.

The boundary line between ?Germany-Poland is called the Oder-Neisse Line.The border between Germany and Poland is marked by this line. The Oder and Neisse Borders are called for the two rivers that run parallel to the border. According to the Potsdam Conference, the boundary respects the Polish-German border. In 1990, unified Germany acknowledged and recognized it.

The boundary line between ?North Vietnam-South Vietnam is called the 17th Parallel North.The boundary separating North and South Vietnam. It was drawn up in accordance with the Geneva Accords of 1954. After the unification of Vietnam in 1976, the 17th parallel became obsolete.

The boundary line between ?Sudan-Libya is called the 20th Parallel North.The border between Sudan and Libya is the twentieth latitude north of the island.

The boundary line between ?Iraq-Iran is called the 31st Parallel.The 31st north latitude is the distinction between Iran and Iraq, and also represents the border of Mississippi and Louisiana, two United States states.

The boundary line between ?US and Georgia; Tennessee, Georgia, Alabama and Mississippi. is called the 35th Parallel.It is between the States of US-North Carolina and Georgia and the border of the states of Tennessee, Georgia, Alabama and Mississippi. It covers a number of states and borders with each other.

The boundary line between ?Missouri and Arkansas is called the 36th Parallel.This is the state line between Missouri and Arkansas in the United States of America.

The boundary line between ?? is called the 37th Parallel.It marked the boundary between Jefferson?s historic and extralegal territories.

The boundary line between ?North Korea-South Korea is called the 38th Parallel.It also lost Korea in 1945 after the Second World War, when Japan lost its war. The United States marched in and entered the South, and by mutual consent the Soviet Union took over the North, dividing the country by the 38th Parallel. It is the now-known North-South Korean boundary.

The boundary line between ?Nebraska & Kansas in the US is called the 40th Parallel.This boundary stretches from the British colony?s northernmost point to Maryland.

The boundary line between ?Colorado and Nebraska-Wyoming; is called the 41st Parallel.41st Parallel is Colorado?s northern border with Nebraska and Wyoming and the south border with Colorado and Utah of the State of Wyoming.

The boundary line between ? is called the .

The boundary line between ?Colorado and Utah is called the .

The boundary line between ?New York-Pennsylvania is called the 42nd Parallel.It?s the New York-Pennsylvania state line.

The boundary line between ?Nebraska and South Dakota. is called the 43rd Parallel.It is the state line that separates Nebraska and South Dakota.