The US government has many military bases and troops stationed in other countries. It can project violence across the planet. Any entity with that power has strong ability to dictate what others do, and induce dependency. https://globalaffairs.org/bluemarble/us-sending-more-troops-...

That isn't something that people "rely on" though. If that power is lost, some other power will come in to fill the vacuum.

they aren't, EU is keeping busy with Russia, while China is growing uncheck on Asia

Those are other powers filling the vacuum.

Safety of maritime shipping. The US Navy was created because ship captains kept getting ransomed by Moroccan pirates, since America gained independence their ships were no longer protected by the British Navy and became fair game.

I know it's a controversial doctrine, but power projection does have a hand in keeping the peace.

those troops will be summarily evicted if the US regime continues threatening its allies with annexation

> Beyond financial services, What does "the entire world" rely on US for anymore?

Our market.

The fact that we buy so much of everything.

> Beyond financial services

Beyond the hoses and water what do we need the fire trucks for?

The aqueduct.

And the sanitation.

petroleum wealth

Global security (lots of countries exist because of the US), Tech industry (ie: Operating system), Food/Energy and some manufacturing. I think only the first two are critical for the rest of the world. The rest can be substituted.

China and Russia are working hard to either replace or invalidate the US for the first point.

> Global security (lots of countries exist because of the US)

That's a very US-centric POV. It's not like half the world would suddenly cease existing if the US collapsed.

how would Linux be affected by the disappearance of the US?