(A) ** The US stock market crashed
(B) The German stock market crashed
(C) The Reichstag fire
(D) World War 1 ended
EXPLANATIONS BELOW
Concept note-1: -The Wall Street Crash of 1929, also known as the Great Crash, the Crash of 29, or Black Tuesday, was a major American stock market crash that occurred in the autumn of 1929. It started in September and ended in mid November, when share prices on the New York Stock Exchange collapsed.