In 1913 after many failed attempts the Federal Reserve system was introduced. Control of money to control the society.
In 1971 Nixon ended the gold standard.
In the 1970's the petrodollar was introduced.
Any country wanting to buy oil had to purchase US dollars. The USA could now profit from printing money without producing anything. (financing by dept)
The USA simply out spent the USSR in the arms race to win the cold war.
What you have to remember about all the plans hatched by these shadowy people. They need more and they need power, it's their aphrodisiac. Yes I believe that drastic population reduction is one of their goals and they have the means. If they succeed you can count on them wanting power and more. A small comfort is that they will eat each other in pursuit of power after the cattle are gone.