In college we intend to enroll depending on the line of field that we want. For example if you want to be a doctor we first apply for nursing, and after that we continue our journey to medicine. But when it comes to being a doctor you have to concentrate in one field. For example if you want to be a surgeon you can’t just simply barge into another field, completely away from your expertise. The same way with teaching, if you are a major in secondary education you can’t just simply sync down to the level of elementary teachers. When it comes to law firms in Toronto, they also have their own line of expertise. For example if you are concentrating in banking and finance, which practically means you tackle asset protection and trade investments, you can’t just suddenly jump to employment wherein you protect the rights of the employees and prevent discrimination. That is why law firms in Toronto exist depending on their expertise.