So what you’re talking about isn’t really globalism, but technological supremacy? Globalism is just about supply chains being spread across the globe. When I pointed out that nations connected with large supply chains still got invaded you moved the goalposts to be about technology.
The fact is that I don’t think there really is any domestic technology that everyone relies on which only has one source - high tech industries such as semiconductor electronics, aerospace engineering, biomedical engineering, etc. are researched, designed and manufactured all over the world. Yes, there are certain countries which have a lot more research in one area than others, or which manufacture a lot more than others, but it’s not as if China, Russia, the USA, Israel, Europe, etc. would be incapable of research, design and manufacturing if those other powers just suddenly ceased to exist.
The Roman Empire had technology that was decades ahead of their contemporaries and that didn’t seem to help them keep the peace - but something else did - an emperor who valued peace and saw it as the goal of the Roman Empire. After the death of Marcus Aurelius, Pax Romana went into decline. It wasn’t technology, or trade, or even military strength which kept the peace - it was a desire for peace, and the people who worked to achieve it.