Can migrations have a positive impact on the people and/or land receiving the immigrants?

 I do think that migrations and immigrants to new lands can have a positive impact on the land. Without new people and fresh ideas, our communities and social groups would just stagnate. The infusion of immigrants to a land results in new ideas, new innovations, and new traditions. By moving around and meeting new people, ideas and concepts having a higher chance of being acknowledged, therefore, society as a whole could become more and more developed as time goes on. For example, the immigration of Jews to America has resulted in health care for all of us, medical programs, women's rights, and many more positive influences to the United States. I would like to give more examples on this topic, but I think the point has been proven; There are many positive contributions from immigrants to new lands.