Mastoidectomy is a surgical procedure to remove an infected portion of the bone behind the ear when medical treatment is not effective. This surgery is rarely needed today because of the widespread use of antibiotics.astoidectomy is a surgical procedure to remove an infected portion of the bone behind the ear when medical treatment is not effective. This surgery is rarely needed today because of the widespread use of antibiotics.
The Germans had little choice â few other places besides the United States allowed German immigration. Unlike the Irish, many Germans had enough money to journey to the Midwest in search of farmland and work. The largest settlements of Germans were in New York City, Baltimore, Cincinnati, St. Louis and Milwaukee.n the decade from 1845 to 1855, more than a million Germans fled to the United States to escape economic hardship. They also sought to escape the political unrest caused by riots, rebellion and eventually a revolution in 1848.
Except for Native Americans, all United States citizens can claim some immigrant experience, whether during prosperity or despair, brought by force or by choice. However, immigration to the United States reached its peak from 1880-1920.The so-called  old immigration  brought thousands of Irish and German people to the New World. This time, although those groups would continue to come, even greater ethnic diversity would grace America's populace.he new American cities became the destination of many of the most destitute. Once the trend was established, letters from America from friends and family beckoned new immigrants to ethnic enclaves such as Chinatown, Greektown, or Little Italy. This led to an urban ethnic patchwork, with little integration.