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.
Immigration continued in very large numbers during the 19th century, with eight million arrivals from Germany. In the middle half of the nineteenth century (between 1820 to 1870) over seven and a half million immigrants came to the United States â more than doubling the entire population of the country.erman-Americans are somewhat better educated and more white collar than the general population, with one-third having at least a bachelor's degree and about 40 percent are employed in management, business, science or the arts.