Okay so, the Great Depression of 1929 was the worst economic downturn. It lasted about 10 years (1929-1939). It caused Wall Street into a panic and wiped out MILLIONS of investors. It also caused troops returning from the war, which created a surge in the civilian labor force and more unemployment. One reason why this happend was because the stock market crash.
The answer is B: Rather than settling in one place, they follow wandering herds.
Constantine made Constantinople the capital of the Byzantine Empire in 330 because it was well protected, had a great location, and was wealthy. The city was rich and successful for so long because it was well protected by water on three sides and had land and sea walls!
I can’t see that choices but I can say this indicates that only about half of sub-Saharan Africa’s 128 million school-aged children currently attending school are likely to acquire the basic skills needed for them to live healthy and productive lives.