1. Historical Context
In the mid-1980s, Japan was the world's industrial superpower. After the Plaza Accord of 1985, the yen appreciated and the Bank of Japan implemented an ultra-expansive monetary policy with extremely low interest rates to mitigate the export impact.
2. The Breakdown Event
The enormous monetary liquidity flowed directly into the Tokyo real estate market and the Japanese Stock Exchange (Nikkei). Land prices skyrocketed to unimaginable levels. At the end of 1989, the land on which the Imperial Palace in Tokyo was built was valued at more money than the entire territory of the US state of California. The stocks of Japanese companies were trading with P/E (price/earnings) multiples greater than 80. In December 1989, the Nikkei reached its all-time high of almost 39,000 points. Starting in 1990, the Bank of Japan raised rates to deflate the market, causing a total collapse: properties and the stock market lost 80% of their value.
3. Global Economic Impact
The crash left trillions of dollars of bad loans on bank balance sheets, plunging Japan into chronic deflationary stagnation and the so-called 'lost decade' (now lasting more than 30 years) with low growth and zero interest rates.
Key Financial Lesson (Psychology of Money)
Real estate and stock market valuations driven solely by excess cheap liquidity and speculation on urban land create macroeconomic distortions that damage a country's structural growth for decades.
4. Practical Case or Real Life Example
The Japanese stock bubble led to Japanese telecommunications companies and banks taking over the list of the largest corporations in the world by capitalization in 1989, a hegemony that completely disappeared after the crisis.