Partly the construction of the post WW2 era and American geopolitical strategy. And partly the United States and it’s political arms couldn’t abide any potential ideological challenges to Western Liberalism both classical and otherwise.

So we’ve been bribing who can be bribed and overthrowing who could be overthrown. While isolating the rest. The application of money and bribery schemes. IE U.S handouts. Is as much to further geopolitical goals and Western, or rather, American hegemony. As it is to line the pockets of our politicians.