What event happened in the year of 1929-1930?

Player #40373019, It was probably ended by WW2

Player #25874027, And as expensive as it was FDR's vegetable soup with letters helped kick start many peoples careers esp. artists from every realm. But definitely the war when the finally joined the effort. The president madmamy mistakes again, esp. regarding Jews and other distressed persons. I grieve about every time I think about it. What a travesty including after when minorities needed fairness.

Player #40373019, yes that's why I didn't get the answer correct, it lasted far longer than one year

And yet again we have Global Economic Crisis .UK now has debt of £100 bill ,and now permits Mega Billionaires to pay less Tax 🤯