Initially, the rules of the game were meant to apply to many of the so-called "first world" nations, including the United States, Canada, Western Europe, Japan, Australia, and New Zealand. And for many years after the Second World War, the rules that had been developed served these countries reasonably well.
Indeed, the global economic order was sufficiently successful that a number of other nations began to see how their economies and their citizens could benefit from taking part in it. And so, more nations began to adopt the policy frameworks needed to become engaged in an increasingly inter-connected global economy. I'll have more to say on this in a few minutes.