Religious persecution, rising population, and the spread of reform and revolt had pushed many Italians out of their homes. Much like our sad buddy, Lorenzo... a resident here.
Italians who sought refuge in the US went through Ellis Island; which is located in New York Harbor. Immigrants took a physical examination, and if they contained any diseases, they were sent home. They were then questioned to determine if they passed legal requirements to be/work in America.
Lorenzo become a teacher... where he met a variety of other people. He had met Lisa, another teacher, who was upset that her family couldn't enter due to the Chinese Exclusion Act; which banned entry to Chinese citizens who weren't students, teachers, merchants tourists, or government officials.
It's okay... we're here for you.
It hadn't stopped there... Lorenzo had also heard that a new arrangement had been made. The Gentlemen's Agreement had made a deal with Japan that there would be a limit of emigration of unskilled workers to the United States in exchange for the repeal of the San Francisco segregation order.
Urbanization had continued to start problems; fire's had spread and there were multiple sanitation problems (the streets were nowhere near clean).
Fortunately, sewer lines and sanitation departments were created. Along with fire hydrants and full time professional fire departments. So, all ended well and Lorenzo had smiled now that he walked along a clean path.