During 1820—1860 there were enormous waves of immigrants coming to America. In your opinion, how did the waves of immigrants shape the country--both positively and negatively?

During 1820—1860 there were enormous waves of immigrants coming to America.  In your opinion, how did the waves of immigrants shape the country--both positively and negatively?  How do immigration waves of the 21st century continue to shape our country?  Crew, think about the political, social, and economic environments.  200 word minimumwith references, does not need to be in APA form. DISCUSSION BOARD QUESTION