The population of the Middle Classes all over the world is declining very fast while the population of the very rich is growing steadily and the population of the poor is growing at the speed of light. Why and what are the reasons?

In every point in history of mankind, the society is always classified. The breakdown is into the rich, the middle class and the poor. Despite, the lie that never fails, we are all created in God's own image........liars and scammers. Empirically, the strength of every society is based on the number or percentage of its middle class. Practically and statistically, the resiliency of a community is based on the population of its middle class.    But, as civilization expands, the number of crooks , frauds and day light witches continue to climb up north of the cardinal point. There is an overt and covert bonding between crooks and the frauds, a very strong covalent bond. The obvious progeny include but not limited to frauds, and illegal activities eroding the spine of every nation. The outcomes are very rich people, very poor people and fast declining middle class globally. Now, we wonder why there is an up tick of crimes, insecurity and poor quality of life? For instance, the middle class in Nigeria is almost completely wiped out and the middle class in America is declining at the speed of light. What can every nation do to increase its middle class number? Can a nation survive without a middle class?