It is obvious that even developed countries also face their problems, which have not been solved now and then, such as violence, drugs, etc… including population. One of the reasons, which make population rates skyrocketed increasing, is immigration. However, in some aspects, immigration is not one of the negative issues. In some countries, for example, in the USA, immigration is one of the fundamental building blocks that help make America the unique nation that it is. From my point of view, immigration or multi-cultural societies have benefits and drawbacks.