Here's a very brief explanation of what happened.
In 1960 minimum wage was $1.00/hour and the price of the average US home was $11,000.00 A popular tour guide was called "Europe on $5.00 A Day" [over the years they did specific cities like Paris or Rome or London...]
In 1964 LBJ decides that he can win the War in Vietnam with a massive buildup and increased bombings. He prints paper money to pay for it, because he doesn't want to raise taxes. The plan is a miserable failure and protests force LBJ to step aside. In 1968 we elect 'peace candidate' Nixon [who sabotaged the Paris Peace Talks]
Nixon kept LBJ's plan and increased spending. He knew the War was unwinnable but thought he could kick the problem down the road and let the 1976 President deal with 'losing' the war.
By 1976 inflation was a major problem, not helped by the Arab Oil Boycott that tripled the price of gas overnight. All those cool loft buildings you see in places like Manhattan used to be small factories making things like purses, clothing, toys etc etc. The owners moved the businesses to the US south where there were fewer Unions.
Jimmy Carter hired a man named Paul Volker to deal with inflation. Carter got voted out before the Volker plan could kick in, so Reagan got the credit for Carter's ideas.
Reagan's own Veep, George HW Bush called the Reaganomics trickle down "voo doo economics" until Reagan offered him the #2 spot on his ticket.
In 1968, when Nixon started waging War with paper money, "middle class" was one Union job paying for a family of four with a nice savings account. In those days, $1 million was still considered a vast fortune. By 1992, when Bush Sr. was finished, middle class was two incomes to run the house and $1 million was what a rich guy paid for a party.
No. There really was a time when FDR's New Deal raised millions out of poverty and gave them a taste of the good life.