Are There Any 3-Landlocked Countries?

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UK boundary data from the OS.

World Country data from opendatasoft.

USA states from looking at them very closely.

"English counties explained" by Map Men

Oh look, a video about the City of London

Target 10.b
"in particular least developed countries, African countries, small island developing States and landlocked developing countries, in accordance with their national plans and programs".

CORRECTIONS
- Now I regret mentioning the Danube river! Apart from that one aside about international diplomacy and a port: for the rest of the networks I did not include rivers, even if they are navigable to an ocean. I appreciate these would change things like London and apparently the USA has some super great lakes.
- Let me know if you spot anything else!

Happy birthday to Eliyahu!

Filming and editing by Alex Genn-Bash
Graphics by Christian Lawson-Perfect
Muddy field navigating with Matthew Watson
Written and performed by Matt Parker
Produced by Nicole Jacobus
Music by Howard Carter
Design by Simon Wright and Adam Robinson

MATT PARKER: Stand-up Mathematician
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Please do let me know if you've done any denture production research!

standupmaths
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As a person born in Nebraska, I can confirm you filmed the entire state

JohnHadish
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So I checked the European NUTS-2 statistical regions, and the most landlocked appears to be Prague, that is 5-landlocked (!!), being completely surrounded by the Central Bohemian Region that is itself isolated from all other countries by at least one other region. After that, you still have to cross at least 3 regions in other countries to get to the sea (for exemple through Germany, you have Saxony, then Brandenburg and finally Mecklenburg-Vorpommern)

fradinetienne
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Tiniest nitpick: the net at 5:30 treats Greenland as fully insular, but as of a few months ago it does have a land border with Canada on a small, remote, uninhabited island. I'm guessing the data Matt used predates that change.

radagastwiz
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Using the "no boats" rule, i.e. you cannot cross large lakes, I found 7 African 6-landlocked primary subdivisions: Bujumbura, Kayanza, Muranvya, and Mwaro in Burundi (a 1-landlocked country), and Busia, Siaya, and Vihiga in Kenya (a 0-landlocked country). Burundi has 8 5-landlocked primary subdivisions, Kenya has 7, Rwanda (1-LL) has 4, Uganda (1-LL) has 1, South Sudan (1-LL) has 1, Chad (1-LL) has 4, and the westernmost African country with a 5-landlocked primary subdivision is Niger (1-LL).

peccantis
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Matt, Regarding the United States. For those states that border a Great Lake, you might say they are not technically landlocked. The Great lakes have seaports on them where there are ocean going ships. The Great lakes are also considered international water. Now if you are thinking of the ocean only, then they are landlocked.

imatop
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Fun Fact: Nebraska has a ceremonial title called "Nebraska Admiral" it bestows upon people.
"And I [the Governor of Nebraska] do strictly charge and require all officers, seamen, tadpoles and goldfish under your command to be obedient to your orders as Admiral—and you are to observe and follow, from time to time, such directions you shall receive, according to the rules and discipline of the Great Navy of the State of Nebraska." is what is said when it is bestowed.

candiman
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New Delhi, the national capital region is a distinct administrative area is also triply landlocked. Both its bordering states are doubly landlocked. Do check it out!

rahulahmedhazarika
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3:04 "I can't just up and go to arbitrary locations on a whim"
I was 1000% convinced that was a segway into the VPN sponsorship. Then he talked about the shortest municipal border in the UK.
I was bamboozled.
*edit* he continues to toy with me for the video

WIImotionmasher
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If you're counting sebdivisions of Countries there are probably a large number of them that are triply or even quadruply landlocked. Xinjiang, Astana, and Omsk come to mind as well as the various provinces around Moscow. As well a provinces in interior Africa and in Brazil, Paraguay, and Bolivia.

inventor
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Matt:

"I think, from memory, they were able to do that slightly more efficiently than my code."

Meanwhile, in the 5-letter word video:

"Yeah, so, we coded this on a ham sandwich plugged into a car battery. Anywho, it gave us an answer 8, 388, 608 times faster than Matt's code."

ChadrickNurn
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Your visit to Liechtenstein looks pretty much like my visit and everyone else's. The only country I have been to where the tourist information centre has information on opening a bank account and the map of the whole country I picked up there had buildings on it.

davidlees
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As a resident of Omaha (the largest city in Nebraska), allow me to share our city's very literal and self-aware motto: "We don't coast."

rehbeinator
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Many of those 2 "land-locked" US states have major river ports that connect all the way to the gulf of Mexico and the intracoastal waterway (and hence the entire east coast up to NYC). This is the same situation you mentioned with the Danube and Maldova except that the MS river basin is massive and navigable insanely far into the country.

Specifically, the eastern border of Nebraska is the Missouri river. Hence the weird curve. The largest city in the state (Omaha) is located on that river. You can get on a boat in Omaha and go to NYC without hitting open ocean.

MaxHaydenChiz
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Weird map fact. Here's a 3-landlocked (part of a) country! At 51.43882079644939, 4.932110205114705. It's the left side of a house on the molenstraat in Baarle-Nassau/Baarle-Hertog. That part of the house is in Belgium, and that part of the house is 3-landlocked, in a way. To get out of the house, you go through the front door which is in (2-landlocked) Netherlands. Isn't the Netherlands bordering on the sea? No, not that part. To get out of that little bitty piece of the Netherlands you have to go through a (1-landlocked) piece of Belgium called Baarle-Hertog. And because Baarle-Hertog is an "enclave" of Belgium within the Netherlands, you cannot go to the sea from there unless you cross the border to (0-landlocked) mainland Netherlands first.
And yes, this is a huge mess. Interesting times in that region during conflicting covid lockdown regimes over the last years...

janpietercornet
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Lesotho is an interesting country as it's completely surrounded by South Africa and I was reminded of it when you were talking about landlocked countries with no ocean access. So a delegation from South Africa met a delegation from Lesotho, and one by one were introduced to each other, but one particular individual caused a lot of confusion - Lesotho's Minister for Oceans and Fisheries. The South African delegation went into a huddle and there was a lot of discussion, an occasional pause and finger pointing, back to more discussion, before finally one of the South African ministers got up the courage to ask how it is that Lesotho has a Minister for Oceans and Fisheries when they don't have access to the ocean. The Lesotho delegation went into their own huddle, and occasionally someone would point at someone and then they'd get back into the huddle and talk some more, and eventually a spokesman for the Lesotho delegation responded with a question of his own, "How come, South Africa has a Minister of Law and Order?"

Richard_AKL
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Knowing how much shipping happens through the Great Lakes and the Mississippi, I’m not sure if it makes sense to consider a lot of those states as “land locked”

NateVolker
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Ivoclar Vivadent's website says "Our production facilities are located in Liechtenstein, Austria, Italy, Sweden, the US and the Philippines." So it seems unlikely that enough of their manufacturing would be located in Liechtenstein to make it the world's largest exporter.

_Madfly
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Since you split the US into states and were right right between Switzerland and Austria, you should have split those into their cantons and länder respectively. All of them are at least 1-landlocked (it depends on whether you split their neighbour countries, too). Then - unless I made a gross error - you will find that Obwalden and Nidwalden in Switzerland and Vienna in Austria are also 3-landlocked.

peterholzer
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There's two triple-landlocked regions in Spain! The provinces of Salamanca and Ávila are both separated from the sea by 3 other provinces (although, taking into account the provinces of Portugal, Salamanca falls off the triple-landlocked club!)

sergiov.