The top three sole reasons why immigrants usually come to the United State are, economic opportunities, political and religious opportunities and freedom, and a better future for their children. Immigrants impacted the American society in both good and bad ways. first of many people feared the immigrants because they were outsiders and they have never dealt with their nationality and race before, they mostly feared that they would bring diseases such as smallpox, cholera, yellow fever and etc. though immigrants meant good by working for the Americans and helping to expand the railroads and helping finish unfinished projects they made the Americans believe that they were here to take over all their job opportunities and some