Great Depression
From Tardis Wiki, the free Doctor Who reference
The Great Depression was a worldwide economic downturn which began in 1929 and lasted for over a decade (only totally ending in 1941 when the US joined the war). [source needed]
The Tenth Doctor and Martha Jones visited New York City during the Great Depression and witnessed the poverty it generated when they visited a Hooverville in Central Park. (TV: Daleks in Manhattan / Evolution of the Daleks)
