It’s basic history that can be found in any western textbook.

Nicaragua = bananas India = black pepper Iran = oil

There are many other examples, but these wars were fought at the behest of private companies.

In Iran, the British hired the CIA to organize a coup and depose the then Prime Minister of Iran because of his plan to nationalize the oil industry. Which would have affected the British oil company that had an ill-gotten monopoly at the time. This might help you get started on the Iran case: https://www.jstor.org/stable/40209809