Research Mossadegh and the US coup in Iran in the 1950’s. Research what the Chicago Boys did to the Russian economy after the collapse of the Soviet Union. (Books: Overthrow by Stephen Kinzer, The Shock Doctrine by Naomi Klein will get you started.).

And speaking of taking over parts of other countries, the US has been occupying the oil and agriculture parts - 1/3 of Syria - since 2011, and won’t leave Iraq or Okinawa even though the people there want them out.