You know, I’ve long wanted to understand exactly how the Great Depression developed and what caused such a massive crash. Because understanding the mechanism of how the economy can collapse in 1929 helps to better see the risks in modern systems.

It all didn’t start just like that. The causes of the Great Depression were not just one, but a whole set of factors that coincided at the same time. In October 1929, the famous stock market crash — Black Tuesday — occurred. Before that, the decade was full of speculation, stock prices soared to the sky, and people mainly invested borrowed money. When confidence evaporated and prices started to fall, a chain reaction happened. Millions of Americans lost their savings in one day.

But that was only the beginning. Panic led to mass withdrawals of deposits, and banks started to fail one after another. People who lost everything stopped spending money. Loans were cut off. Companies couldn’t get financing. Production fell. That’s how the Great Depression began — the causes were interconnected and amplified each other.

The crisis didn’t stay in America. Europe, already weakened by World War I, lost markets for its exports. Governments began imposing protectionist tariffs (I remember the Smoot-Hawley Tariff of 1930), which provoked retaliatory measures from other countries. Global trade plummeted into an abyss. Everywhere, the same thing — rising unemployment, business closures, people on the brink of poverty.

In some countries, unemployment reached 25%. Queues for food, homeless people on the streets, thousands of companies went bankrupt. It was a social and political explosion. People looked for a way out, and this led to the radicalization of political systems in different countries.

The way out of this hell was long. In the USA, Roosevelt launched the New Deal — large-scale aid programs and reforms. The government began creating jobs through public works, regulating banks and the stock exchange. Many countries introduced social insurance, pensions, guarantees for the unemployed. But full recovery only happened when World War II began — military production finally kick-started the economy to full capacity.

And here’s what’s interesting: after that, the rules of the game changed forever. Regulators introduced deposit insurance, control over securities, social programs. States took on greater responsibility for economic stability. The causes of the Great Depression, partly rooted in lack of regulation and social protection, taught leaders that mechanisms are needed to prevent such catastrophes.

Today, when you see volatility in the markets, you realize that lessons from the 1930s remain relevant. The fragility of the financial system, the importance of regulation, the necessity of social protection — all of this was learned at the cost of millions of lives. And although much has changed since then, history shows that without proper measures, the economy can fall very quickly.