Read the world at its intersections.

The imperial title was not inherited. Seven prince-electors chose the Holy Roman Emperor, and by 1519 they had learned to expect payment for the privilege of choosing. Two men wanted it: Charles of Habsburg, nineteen years old and already king of Spain, and Francis I of France. Both were kings. Neither had the money.

Neither crown could raise the sum by taxation in the months available, and electors do not wait or accept promises. The contest was therefore not between two dynasties. It was between two credit lines.

A merchant banker in Augsburg advanced something over half a million florins on Charles’s behalf — the greater part of everything spent. He asked for no title. He took mining rights in the Tyrol and in Hungary, the copper and silver that came out of them, trading monopolies, and the pledged revenues of the Habsburg lands.

Charles was elected. He then spent four decades at war — against France, against the Ottomans, against his own German princes — and a great deal of it was financed by the same house on terms that house had set. The house held, in effect, a lien on imperial policy.

The banker understood precisely what he held. When repayment ran slow he wrote to the Emperor and said in plain words that it was well known Charles could not have taken the crown without him, and asked to be paid. He wrote as a creditor rather than a subject, and he was entitled to. A decision taken in a counting house in Augsburg had settled who ruled Europe, and how long the fighting could go on.

It happens again in 1875. Egypt’s ruler needed cash and sold his holding in the Suez Canal Company. Disraeli bought it for four million pounds — money the government did not have to hand and could not vote in time, advanced instead by Rothschild in a single afternoon. Britain acquired the road to India by borrowing it.

It happens again in 1956. Nasser nationalised the canal, Britain and France invaded, and the invasion did not fail militarily. It failed when Washington declined to support sterling and allowed a run to develop. Britain withdrew because it could not fund the position. An empire was stopped on the bond desk.

It happens again in 2022, when a very large part of Russia’s central bank reserves — on the order of three hundred billion dollars — stopped being usable. Nothing was taken from a vault. The institutions that held the entries simply declined to honour them. No shot was fired, and the balance sheet was the weapon.

Markets, statecraft and force are taught as three subjects by people who do not attend each other’s seminars. They are one subject examined from three positions, and this is where the three are read together.