First, immigrants have difficulty in coping with new cultures, therefore so many immigrants can get embarrassed in their first week or month, some of them may perform actions or do things that are fine in their culture but they soon get surprised that these actions are not welcomed in the new culture. For example, in some countries, people always greet each other when they meet in streets or other places without even knowing each other, but in some countries it may sometimes be awkward and suspicious.
Second, immigrants may get depressed due to some emotions like homesickness and