Diffuse And Erythematous Gastritis What Cause Immigrants To Diffuse From Their Home Countries?

What cause immigrants to diffuse from their home countries? - diffuse and erythematous gastritis

So, I am a social studies project where I need to make a news paper when he returns to the period of industrialization, the westward expansion and immigration. I have my binder at school and had all my notes in it. Could some of the reasons on the causes of immigrants, the spread of their country of origin? I must be ready for my group tomorrow. Lol