From the contemporary central bank keeping interest rates so low and engaging in currency/carry trade that is remitted to the treasury and the use of sterilisation, the industrial market having reverberating upstream effects on the supply chain in Taiwan vs Mexico, as well as Japan's development of Taiwan and the point about developing economies and tariffs to protect otherwise uncompetitive industries vs just developing infrastructure, I really learned so much, it was amazing to read!
I also really liked the specifics of US foreign aid as an American that has never really thought of it. It was really fun and interesting.