TL;DR of your nation and its people

[Kaifunasia]

What is a good TL;DR description of your nation and the people who live there?

For Yakus: Many different landscapes such as jungles, mountains and grassland. The people are very loyal but likely to laugh at you behind your back. Coffee is life and there is NO such thing as a latte here.

[Arctica-Aleutia]

Arctica-Aleutia is made up of plains, mountains, swamps, tundras, and thick forests. It is quite cold in most of the country but warms up enough for swimming during summer in some areas to to warm ocean currents during that time of year. There are scattered islands to the east of the mainland, and the capital is on a small island to the north.

The people are generally friendly and open-minded. 98% of the population is human and the rest is vampiric. All citizens and legal residents are given equal rights; illegals are given fair trials and health care but must apply for citizenship as soon as possible. The government has an executive branch consisting of the president. The legislative branch is made up of an upper and a lower house. Each district has one representative in the lower house, and those with a higher population also have a representative in the upper house. Representatives/legislators are required to vote based on the popular vote of the people in their district. The term for our system of government is a direct legislative democracy. Capitalism is the current economic system but socialism and Trotskyist communism are gaining support. The life expectancy is 80 years for humans and 1,212.5 years for vampires.

EDIT: Sorry if this was a bit long.

[Novorossitov]

Novorossitov basically has a jungle-like environment, mountains and hills in the center, with a temperate forest flanking them, and a thin rainforest flanking that. The nation itself is an imperialist neo-colonialist alter-ego of Russia, except, here's the catch, they themselves were colonized by Russia. The people are Russian, with a few noticeable tweaks thanks to the environments they reside in. The non-Russian populace are mainly Natives in both our colonies and mainland, but we do have a few immigrants. Done.

[La Cosa Fedora]

A massive, secretive, highly disciplined organization of neckbeards controlling a puppet government that appears to be a liberal/libertarian free market democracy, but is in reality an authoritarian apartheid state set up to ensure the dominance of the neckbeard over the normies.

There are organizations such as political parties, churches, corporations, unions, and even activist groups such as Black Lives Matter, but these are all infiltrated and to greater or lesser degrees controlled by the neckbeards.

[Devernia]

The Commonwealth of Devernia is an archipelagic, progressive nation, remarkable for its soft-spoken computers, gloomy weather, smutty anime, semiconductor industry, deadly water, rampant genetic experiments, and devotion to social welfare. The technoliberal, democratic population of 50 million Devernians are taken care of like babies by the huge safety net, while the government tries to sort out the messy paperwork from solving everyone's problems.

[2nd Brazilian Empire]

The Constitutional Monarchy of Brazil is a continental sized, libertarian nation, known internationally for beaches, pornography, and massive genetic engineering projects which sparks fear among the conservative religious, who are a significant minority. The internationalist, communist aware population of 228 million Brazilians likes to decide their lives for themselves and despises welfare along with governmental intervention.

[Ulan-Ata]

The Federation of Ulan-Ata is a wide, coastal nation with rainforest, desert, mountain and grass plains landscapes and a very diverse ethnic structure based on mostly East Asian and Southeast European ethnicities, known for a ridiculously big army, a very extensive infrastructure, a tendency to expand into neighboring nations, and a tremendous coffee consumption. The cynical but very friendly population of 121 million Ulan-Atans is ruled by a socialist-technocratic unity party and a ruler who grants the people a stable social net and good civil rights but takes care that no one tries to undermine the system. Agriculture, Information Technology, Arms Manufacturing and Tourism are the leading industries in Ulan-Ata.

[Gigaverse]

"Life in this Japanese Imperium of Man doesn't suck. They actually speak Latin, for one."

[Henuld]

Scandinavianish island country, whose people are snobbish and irreligious and headed by a liberalized historical conservative party.

[Nouveau Yathrib]

Fictional alt-reality version of Australasia set in a 22nd-century post-apocalyptic hellhole/world ruined by anthropogenic climate change and overpopulation. Populated almost entirely by destitute climate refugees from Asia, Africa, and to a lesser extent Latin America and Europe as well. Resource scarcity and the breakdown of the globalized "Information Age" world have resulted in a society marked by extreme socioeconomic disparities, an apartheid police state, communally-enforced multilingualism/vegetarianism/cosmopolitanism, and infestations of genetically engineered avians commonly called "eucalyptus dragons".

[McFreedomstan]

A nation with absolute freedom, for better or worse. It's people are highly rebellious and resilient.

[Imperial Union of America]

Authoritarian dictatorship, neo-liberal economic policies, genocidal racial purity, enslavement and extermination of local populations and white settlers in far-flung colonies. Huge military industrial complex and strong social services.

[Troperia]

The Community of Troperia is a beautiful, advanced, mythical nation notable for its widespread usage of magic, remarkable works of fiction, extremely bizarre weather and complete lack of safety laws. The culturally diverse, optimistic, impulsive populace of nearly 166 million Troperians are culturally conservative as they fiercely try to preserve their own unique cultural heritage, religiously, however, they are mostly moderate in the sense that they follow the basic teachings of their religions while ignoring the too extreme ones. They are unsuprisingly good artists as the society as whole advocates the arts as a progressive field in developing the nation.

[The United States of the South Pole]

Frigidly Cold Nation here, most people live in relatively large biomes with low ceilings though the rich and college frats are usually able to afford their own little bio dome. Constantly snowing, Ice is thick and safe is drive on, it is the south pole after all.

Our people are Anglo-Slavs who speak in a Southern American-Jamaican Accent, they've very racist and distrustful of outsiders yet friendly, talkative, and humorous. Leaving some people to think they're bipolar. They treat strangers of their own race as old, tongue in cheek, good friends and they'll show that same relationship with minorities or obvious foreigners if they show some sign of humanity; generosity, failure, loyalty.

Protectionist with some of Green and Unionist Policies at the federal level but much freer trade at a state level. Socially Libertarian with some Conservative ideas. Centrist on Tax Policy, Progressive income tax but the government doesn't spend too much. Our Electoral process is a multiparty, mandatory voting Constitutional Direct Democracy. The Parties handle the day to day while the people are given a day off four times a year to vote on issues that popped up in the last 3 months. As long as 1/3 the population decides an issue is a major issue, the vote is then send off to two houses, The Constitutional House of 50 members, who decide if the issue can be handled constitutionally, and the Deciding House of 135 members, who decides whether the issue should be handled by those it affects or the entire nation. Then it is finally given back to the people to vote on. Our leaders are Conspiracy Theorists, Liberal Minarchists with Nazi Sympathizes, Eco-terrorists, Religious Communists, and Teenagers elected purely because the "man" didn't want them to be elected.

[Gigaverse]

[When all your TL;DRs are themselves too long]

OP should have explained the point of TL;DRs being summaries of things that are so short they couldn't be shorter.

[Peoples Republic of Paiwan]

TL;DR: A nation that's basically China with a history of oppression and political domination.

[Parravon and Lyonesse]

Arrogant nation comprised of arrogant people who consume far too much cheese and wine for their own good.

[The Derpy Democratic Republic Of Herp]

Once there was no ponies then: ponies and silliness.

[Kaidou]

1 - A posh restaurant
2 - A weeaboo watching Boku no Pico on his iPad at full volume outside said restaurant
3 - A foreign ambassador having dinner at a table near the window beside which said weeaboo was crouching
4 - A pianist playing Beethoven's Pathétique Sonata
5 - Flambéed bananas

The rest is up to imagination.

[Zhouran]

Asian people that are descendants of horse-riding nomads who have a spartan-like warrior culture and are the biggest Euroboos in Asia.

[Targovia]

Targovia is a mix of a parliamentary republic, and a hereditary monarchy, and it is a relatively new state. Born of conflict between Nationalists and Moderates, it has been troubled for most of it's history. Targovia is very mountainous, with thick forests covering the country like a blanket. Targovia is also rich with coal and iron, and has immense economic potential. Targovian culture is roughly equivalent to Serbian or Montenegrin culture.

[Radiatia]

A land of excess and extreme contrast - huge wealth, huge poverty, crowded cities, isolated wilderness, scorching summers, freezing winters, obesity for some, malnourishment for others.

[Cacerta]

TL;DR A nation with a lot of boats with people that like to have a lot of sex. Our Queen likes being in the nude.

[Multiversal Venn-Copard]

Bi-species civilization of multiversal-conquerors-turned-multiversal-interventionists. Unusual for their tech level since they're still (mostly) organic/unaugmented, and unusual in combat doctrine since they favor overwhelming offense above everything else.

[Leonorian Federation]

The Leonorian Federation is a small but growing nation, known for their wide-ranged national sports culture (including soccer, horse riding, shooting, drinking, complaining), frequent system changes, militias, and wars on autobahns. The hard-nosed, cynical population of 25 million Leonorians is (currently) ruled by a 26-year-old communist schoolgirl trying to bring some stability into this nation by destabilizing it first.

Leonoria is basically what comes out if the states of Bavaria and Hesse declare independence, Franconia conquers Hesse and sells Old Bavaria to Austria, fornicates with the Czech Republic, they get a daughter and "accidentally forget" her at a freeway rest zone somewhere in Hungary with a flight ticket to "Anywhere But Home".