Earlier quoted context omitted.
I love this "half of annual discretionary spending". It is designed to confuse the fact that military spending is only %15. [1] https://www.kff.org/medicare/issue-brief/the-facts-on-medica...
I don't think spending more on military than the next 10 countries combined can be described as "only" in any way. The highest spender are the US, with $732.0 billion, followed by China with $261.0 billion, then India and Russia with $71.1 and $65.1 billion respectively.
The dark ages were caused by the localizing of production, with local feifdoms losing access to specialized technical expertise. To some extent, this is what we see now with companies moving produuction back to North America.