Wars have a profit motive, at least quite often.
Sure, I'm an economic historian that looks at state building and political-economy so I;m not about to disagree with you there.
Borders also have a profit motive, although it's probably not effective at accomplishing it's goal.
Kinda sorta. Why does England end at the Tweed? If you want an example involving extant sovereign states, why is Schleswig-Holstein part of Germany not Denmark? This is a bit ironic because you're coming off as a pretty strong Marxist here, and I kinda doubt that's your position based on other things I've read.
There's lots of things that act as wedges between us that only exist because of scarcity.
Of course, I would never disagree. I wasn't saying that scarcity isn't an issue, I'm just saying there are forces that can drive conflict.
Can you give me an example of a problem that could arise?
I can think of a huge number. Think of corruption in the state. Think of trying to enforce ideological conformity especially in regards to political-philosophy. Think of if America was able to become the only state and continued to enact racist policies.
Again not all issues are material and ideology,
pace vular Marxism, doesn't always simply derive from material circumstance.
External pressures have often tended to either alleviate a number of these problems, provide alternative models for development, or provide a space for dissidents to work towards reform.
Within a thousand years probably. But does when really matter when it is both inevitable and won't happen in our lifetime?
It's not inevitable. Nothing is inevitable, and I'm not seeing any forces currently at work that make it seem incredibly likely.
Again this is the worst sort of whiggery.