I’ll go by (very broad) regions:
The United States experiences a brain drain and Trump’s death (all but inevitable in 10 years, whether by natural causes or other means), will cause a major rift in the Republican Party. Democrats will somehow fail to capitalize on it and then blame online leftists, famously the kingmakers of American politics.
Canada will become a de facto part of Europe. Bike lanes will be added.
Europe will experience an economic boom as it’s basically forced to develop new industries, becomes the default destination for scientific research, and the Euro begins to replace the dollar as the currency of choice for international trade contracts. France, especially, will benefit as it isn’t reliant on the U.S. for military support, space launch capabilities, etc. and will become the default NATO weapons supplier.
Russia will have a deep post-war depression even if it takes Kyiv due to brain drain and sending so many young men into a meat grinder.
China will have a medium-sized economic crisis but ultimately (after Xi) enact long needed reforms (kind of like when Mao died and Deng Xiaoping enacted reforms).
India will have a major crisis as Hindu Nationalism goes too far and people begin to revolt.
Central Asia will keep on keeping on. (I don’t know a lot about Central Asia.)
Latin America will increase trade with China and Europe at the expense of the United States. Bolsonaro will go to the hospital 50 more times and be bit by an even more exotic bird. Argentina will benefit most from the decline of the U.S. as a reliable trading partner.
Israel will annex the West Bank and Arab countries will isolate it. Saudi Arabia’s line city will still be in the planning stages. Iran will develop a nuclear deterrent but the power of the Supreme Leader will be weakened and shift to the elected officials because of economic problems.
The Maghreb will benefit from Europe’s rise and increased trade. West Africa will experience an economic and population boom and become an inexpensive manufacturing hub. The Horn of Africa will probably remain a shitshow (but hopefully I’m wrong about that). Central and Southern Africa will also experience significant growth but at a slower pace than West Africa.
Australia will lose another war with emus as New Zealand wisely allies with the Emus. They will force Australia into a humiliating peace deal that ultimately leads to a third Emu War, much like WWI’s onerous peace terms led to WWII.
Ocean acidification and rising sea levels will begin to fuck everyone and scientists will scream about it but it’ll be the following decades when that sort of thing really wrecks the world economy.
Nintendo will somehow sell me the same games for the 5th time.