Why was brother could you spare me a dime so popular during the great depression?

The great depression was a period of time when a severe worldwide economic depression that took place during the 1930s, originating in the United States. The timing of the Great Depression varied across nations; in most countries it started in 1929 and lasted until 1941. It was the longest, deepest, and most widespread depression of the 20th century.In the 21st century, the Great Depression is commonly used as an example of how far the world's economy can decline. This resulted to people asking each one another the phrase "brother could you spare me a dime?" :) hope this helps!