Thank you for posting you question here at brainly. The longest, deepest, and most pervasive depression in American history, lasted from 1929 to 1939. Its effects were felt in virtually all corners of the world, and it is one of the great economic calamities in history.
I believe that the answer should be c
The raising of the real wage of England (due to the shortage of labour as a result of the reduction in population), a trait shared across Western Europe, which in general led to a real wage in 1450 that was unmatched in most countries until the 19th or 20th century.
The answer is trade rights
The city of Nanjing was extremely vulnerable to Japanese attack because the Chinese armed forces had been removed from the city.