Why are the cold countries more developed than the hot countries?

[buritobr]

There are some exceptions, but, usually, cold countries are more developed than hot countries. Inside the big countries, cold regions are more developed than hot regions.
Why?
There is the hypothesis of the natural selection: It is necessary to be developed to survive the cold. But the problem of this hyphothesis is: the poverty of the today developed cold countries was worse until the 19th century than the poverty of the underdeveloped hot countries is today.

[Boston Bread]

Mostly due to disease. Having tropical diseases discourages trade, animal husbandry, and urbanization, all of which were pivotal to creating a modern society.

[Santander]

The Renaissance, The Age of Discovery, European capitalism, the Protestant Reformation, the Age of Enlightenment, and the Industrial Revolution. The world order wasn't always this way, it became this way over the past 600 years or so.

I am convinced that the European miracle is because of God's providential blessings, but that's just me.

[Taco Truck 🚚]

There are some exceptions, but, usually, cold countries are more developed than hot countries. Inside the big countries, cold regions are more developed than hot regions.
Why?
There is the hypothesis of the natural selection: It is necessary to be developed to survive the cold. But the problem of this hyphothesis is: the poverty of the today developed cold countries was worse until the 19th century than the poverty of the underdeveloped hot countries is today.

You are just biased.  Your question isn't so much about the world so much as it is about yourself.  You look at the world through a particularly biased prism so you see things a particular way.  Obviously some of the hottest countries on the planet have the best standard of living for their citizens (Kuwait, Qatar, Dubai, UAE, etc).  And the largest cold country is a sh-thole (Russia).  California has a hell of a lot more billionaires and millionaires than the coldest state in the Union while also having the hottest place in the Union.  Detroit is a lot colder than a lot of the country.  Just draw the lines in whatever way you wish to push your particular racial, ethnic, or national world view.

[parochial boy]

Doesn't Jared Diamond sot of answer this?

In a nutshell, the first place to develop agriculture was the Fertile Crescent in Mesapotamian/the Middle East, because it was fertile; the most advances area then became the Med basin because it had that big sea which made it easy to trade. This gradually spread to Western Europe, which was most adequately placed to reap the benefits of access to the goodies in the New World.

So, off the back of that, the relatively cool Western Europe became the wealthiest.

Outside of Europe, it isn't necessarily even the case that the coolest areas are the most succesful. The wealthiest areas of China are along the Eastern Seabord; with the colder inland areas and North-East being quite far behind.

The South of the USA and Northern parts of Latin America are behind in part due to the legacy of slavery and extremes of inequality.

[🦀🎂🦀🎂]

I think q lot of professional historians have mixed opinions on Gg&s

[buritobr]

I mentioned that there are some exceptions. California is an outlier. The top US states according to the HDI are located outside the sunbelt. You can see the list here https://en.wikipedia.org/wiki/List_of_U.S._states_by_American_Human_Development_Index

Among the hot countries, the rich ones are Singapore or oil rich countries. Emirates and Qatar are rich, but they are a hell for immigrants.

Russia defeated the nazis, owns nuclear weapons, had Nobel Prize winners, sent the first artificial satelite and the first man to the space, is fighting against the Islamic State...

[Hatman 🍁]

Kind of hard to be poor in a cold country. One reason why homelessness is so much worse in Vancouver than other parts of Canada.

[parochial boy]

I think q lot of professional historians have mixed opinions on Gg&s

Well, as far as you can use a grand sweeping theory to answer an intensely complex question in two paragraphs on an internet forum, it has its appeal.

Certainly more so than "the inherent superiority of our judeo-christian culture", or "cold weather makes you work harder".

[Taco Truck 🚚]

I mentioned that there are some exceptions. California is an outlier. The top US states according to the HDI are located outside the sunbelt. You can see the list here https://en.wikipedia.org/wiki/List_of_U.S._states_by_American_Human_Development_Index

Among the hot countries, the rich ones are Singapore or oil rich countries. Emirates and Qatar are rich, but they are a hell for immigrants.

Russia defeated the nazis, owns nuclear weapons, had Nobel Prize winners, sent the first artificial satelite and the first man to the space, is fighting against the Islamic State...

Like I said draw the lines any way you wish to push your world view.  Cherrypicking your way through history is not a thorough analysis.  Russia being held up as some kind of success story is bizarre.  I would much rather live in parts of subsaharan Africa than anywhere in Russia.  Russia regularly has multiple cities that rank as the most polluted places on earth.

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https://www.theguardian.com/global-development/2013/nov/08/toxic-towns-poisoned-rivers-byproduct-industry

So there is a city in Russia where the life expectancy is in the low forties.  You are much better off living in Africa.