Hamburg is the largest city in Europe that is not the capital of a country.
Answer: It sharply decreased and suffered heavy losses.
Explanation:
Tobacco, like most industries in America, saw its prices plummet and farmers take heavy losses. Before the Depression, farmers had tried to capitalize on the prosperity of the 20s by producing a lot of tobacco. So much so that they overproduced and tobacco prices fell before the Depression.
When the Depression then came, they fell even harder. Tobacco was traded was 86 cents a pound in 1919 was trading for 9 cents in 1931. Sometimes farmers did not even make enough to justify the cost of production. This went on till some government policies enacted by Roosevelt with the New Deal.
A modern scholarly article, the first three are primary sources (Text or items from the time period being investigated) and the last one is a secondary source which was written by someone investigating that time period, therefor it is not an artifact