Symbols, Iran and the US

DARIUS: - Coins bearing his visage are found in the Americas but we would never expect to see normal academic overviews mention this for public consideration. And I was not surprised when I read many other things about Aryans and supposed first Empires, as I read the following part of a far larger presentation. Was the US support of the Shah connected to a larger and long term plan to manage the plebs or serfs who think they are free?