I think it was invented in 1993
I am pretty sure that is is the attack on Pearl Harbor
One of the main factors which contributed to the Stock Market Crash in 1929, when the very loose regulations related to margin orders.
In financial terms, margin in an instrument which consists on depositing a collateral with a counterparty (generally the broker) to cover some of the credit risk that the depositor places to that counterparty.
In the 1920s, the mandatory requirements regarding margins were not very strict, and brokers asked investors to put in a small fraction of their own money. Leverage rates which measure the proportion of debt, reached 90% with a high frequency. Nowadays, the Federal Reserve has established the limit of 50%.
Back in 1929, when the stock market started to contract, many investors received margin calls. They had to hand in more money to their brokers, because the amounts required before were not enough and if not, their shares would be sold. Many people did not have the extra margin amounts required, their shares were sold and the market declined further. This generated more margin calls and more declines. This is why margin calls were one of the causes which triggered the Stock Market Crisis and, in turn, the Great Depression in 1929.
Consumer Culture
A society in which mass production and consumption of nationally advertised products comes to dictate much of social life and status.
Jazz Age
Term coined by writer F. Scott Fitzgerald to characterize the spirit of rebellion and spontaneity among young Americans in the 1920's, a spirit epitomized by the hugely popular jazz music of the era.
Flappers
Young women of the 1920's whose rebelling against prewar standards of feminist included wearing shorter dresses, bobbing their hair, dancing to jazz music, driving my cars, smoking cigarettes, and indulging in illogical drinking and gambling.
Harlem Renaissance
The nation's first self-conscious black literary and artistic movement, centered in New York City's Harlem district, which had a largely black population in the wake of the Great Migration from the South.
National Association for the Advancement of Colored People (NAACP)
Organization founded in 1910 by black activists and white progressives that promoted education as a means of combating social problems and focused on Leah all action to secure the civil rights supposedly guaranteed by the Fourteenth and Fifteenth Amendments.
Modernism
An early-twentieth-century cultural movement that rejected traditional notions of reality and adopted radical new forms of artistic expression.
Nativism
Reactionary conservative movement characterized by heightened nationalism, anti-immigration sentiment, and laws setting stricter regulations on immigration.
Sacco and Vanzetti Case (1921)
Trail of two Italian immigrants that occurred at the height of Italian immigration and against the backdrop of numerous terror attacks by anarchists despite the lack of clear evidence, the two defendants, both self professed anarchists, were convicted of mister and executed.
Immigration Act of 1924
Federal legislation intended to favor northern and Western European immigrants over those from southern and Eastern Europe by restricting the number of immigrants from any one European country to 2 percent of the total number of immigrants per year, with an overall limit of slightly over 150,000 new arrivals per year.
Scopes Trial (1925)
Highly publicized trail of a high school teacher in Tennessee for violating a state law the prohibited the teaching of evolution, the trail was seen as the climax of the fundamentalist war on Darwinism.
