> The picture above is a clue. In the 18th and then 19th century there was a sequence of taxes on glass. Most famous of all is the window tax of the 18th century which, in fairness, wasn’t primarily a tax on glass. It was mostly a tax on housing (the more windows, the more you paid - hence why people bricked in windows).

Eighteenth century Britain levied a great many consumption taxes on things that were disproportionately bought by the wealthy. These were the taxes that the Boston Tea Party rebelled against.

> Here’s a chart I dug out of the UK National Archives while researching Material World. It shows you optical glass supplies to the UK. And look: the standout thing is how quickly UK domestic production rose.

> The UK didn’t need German glass by the time that deal was done because it was producing plenty by then, and output was rising fast. UK factories had swung into action. They turned around the deficit so quickly that by the end of the war they were producing more than they needed - enough to supply their allies.

> The glass famine, in other words, was followed by the glass feast.

> (the other thing to note is what happened AFTER this chart: having rebuilt its glass industry, the UK allowed it to waste away again. By the post-WWII period it was back in the doldrums. Most of the optical producers shut down. It was a short-lived feast).

There's a strange pattern of Britain performing best when it's least prepared. I think this ties in well with the observation that the British establishment is unconcerned with 'theory' and wholly concerned with practical matters, which I first read in The Sloane Ranger's Handbook. Compare also the discourse surrounding the US Bill of Rights to that surrounding the English Bill of Rights, which includes pretty much the same rights (including the right to bear arms).