Are we talking worldwide there? How is that number even possible, that's like half the US's GDP and almost four times UK's.

I think parent is talking about the US COVID bills that provided liquidity to the stock market and checks to households.

Did UK also do something like that?

We are also still seeing supply chain problems here that started during COVID. Consumption didn't cease during COVID, but production did, so there is a massive backlog. Not speaking retail consumption, but industrial and government orgs also consume resources like equipment, machines, etc. And those assets are seeing persistent backlogs, especially domestic production as US is fully employed and no room to increase production.

I'm not sure how much of a point there is in treating this inflation as region-specific when the economy is clearly globalized to the point where anything affects everything and most countries are also seeing it.

The UK made its own relief checks, as did all EU countries afaik, but to a much smaller degree than the US. Some only to students or as free meal/vacation vouchers.

China also did a lot of its QE with chinese characteristics. If i remember correctly north to a trillion $ in 2022.