My definition of a sweatshop[,] is a factory or a place of work that does not meet safe working conditions and often mistreats its workers by offering them very low wages for long working hours.
Should there be comma or another mark before offering my definition?
The potential problems of using sweatshops[,] are the dangers that come by employing people in unsafe and inhumane conditions.
Should there be a comma before "are?"
Many people will disagree with me[,] saying that it is the only way to keep up with the competition in our capitalist society.
How about this comma over here?