Name two regions or the world where immigrants to the us came from?

Russia and Italy

This really depends on what time period you are talking about. By now immigrants have come to the US from pretty much every country and region of the globe. However, while the US was still only colonies under the British, the majority of immigrants came from Western Europe, and later Eastern Europe. A sizeable surge of East and Southeast Asians immigrated to the United States during the Gold Rush.