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Between Canada and the US.
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An open border is one that allows unrestricted entry and exit. The border between Canada and the US has been described as the world's longest "undefended" border, but it is not an "open" border. Even the "undefended" concept of the Canada-US border is now being questioned.
What else can I help you with?
Does Tennessee border the worlds longest river?
The Amazon River in South America is the longest river in the world. Tennessee does not border it.
Worlds longest toenail?
worlds longest toenailes
Where is the worlds longest road bridge?
The worlds longest road bridge is in China
What is the state which border is longest with nervada?
California has the longest border with Nevada.
What state does Kentucky have the longest border with?
Kentucky has the longest border with Tennessee.
What is the longest border in Spain?
The longest border in Spain is the border with Portugal to the west. The border with Portugal runs from the north of Spain to the south.
Which country has the longest border with the Arabian sea?
India has the longest border with the Arabian Sea.
What country has the longest border with Brazil?
Brazil shares its longest border with Bolivia.
What afracan country has the longest border on the Mediterranean sea?
Libya has longest border on Mediterranean
Which has the longest border with Canada?
At 8891 km, the border between Canada and the USA is the longest between any two countries, but a major section of that border (with Alaska) is not contiguous with the rest. The longest contiguous section of border between two countries in the world is between Russia and Kazakhstan, at 6846 km.
Is Saskatchewan the longest border that Canada and the us share?
No, Ontario has the longest border with Canada and the US.
What country has the longest border with Afghanistantan?
Pakistan has the longest border with Afghanistan. It stretches for over 1500km.
