Sustained prosperity is new and sustained prosperity for masses of people is completely unprecedented. What is sustained prosperity? It’s three or more generations of people who do not need to focus on survival or live in economic depression, but who can live comfortably even if they live paycheck to paycheck.
The only people who previously enjoyed sustain prosperity were the aristocratic landowners and royals especially of Europe and Asia. After the industrial revolution a few business men and bankers were added to that list but only if their wealth was handed down for more than two generations. No even we do.
Isn’t this the definition of the very rich? Yes, but what is new is that the entire group of people we call the ‘middle class’ has also become comfortable in the four generations since WWII.
How big is the middle class? Even though there are billions who do not enjoy this prosperity, fully 1.80b people are in the global middle class today (and another .15b people are rich). Of that 1.8b there are 18% who live in the U.S., another 36% live in Europe, and 20% are in the BRIC nations.
How did so many join the middle class? It was through the opportunities of new businesses, new inventions, a new high level education for the public, and new skill and knowledge based jobs. These are only possible where there is liberty and governments that allow businesses to prosper.
Why do Africa, the Mid-East, and Latin America have a very small middle class population? Because those regions still retain the old definitions of aristocratic and inherited wealth. That’s the polite way to say it. The reality is more that corrupt governments have plundered their own nations and their own people by corralling the wealth of the land including oil and minerals for themselves.