Farming
Distribution: Difficulties with moving product from grower to consumer. It is expected that this difficulty will increase in future. The reasons for this are complex, but one important factor may be the absence of a dominant international naval power. The British Navy provided protection against pirates in the 19th and early 20th century, and the US Navy protected shipping after WWII. The US is still a dominant naval power, but its power will soon be based on its small number of huge aircraft carriers. They will not deal with small boats full of armed pirates, which is the usual way piracy is done. So we can expect grain ships (etc) will have to carry any protection they may need, or they will have to go the long way around. That means avoiding the shortcuts into the Mediterranean. Other kinds of warfare, such as we see in the Ukraine, adds to the problem of shipping food products safely.