Explanation:

Unemployment in a developing country generally takes place due to lack of complementary factors of production.
Unemployment is a phenomenon that occurs when a person who is actively searching for employment is unable to find work. Unemployment is often used as a measure of the health of the economy.
Demand deficient unemployment occurs when the economy is below full capacity. For example, in a recession aggregate demand (AD) will fall leading to a decline in output and negative economic growth. With a fall in output firms will employ less workers because they are producing less goods.