Please be more specific and give more details to the question
Answer:
Conditions varied from ship to ship, but steerage was normally crowded, dark, and damp. Limited sanitation and stormy seas often combined to make it dirty and foul-smelling, too. Rats, insects, and disease were common problems.
Explanation:
According to Adam Smith, the self-interest represents the personal gain of the individual and actions he takes in order accomplish that self interest. He was a staunch believer in the free market and was against government regulations because he thought that the free market would most benefit the individual and therefore the society. The competition is what makes the the manufacturers produce better products and more of them, while this will spur the costumers to buy those products. When many act in their own self interest, the market will give both to the manufacturers and the consumers.