The Great Depression was in England and America. It mainly hit England during the 1930s. However, many people have argued that the Great Depression started around 1918 in Great Britain in general, because of an unstable economy caused by WW1.
Farmers had to deal with a variety of problems during the Great Depression. People did not have the money to buy what they grew, and the demand for farmed goods fell. This caused the farmers to lose money and feel the effects of the depression as much as anyone in the big cities.