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.
German immigrants were an important subset of American culture from before the Revolution, but they made their greatest impact beginning in the 1840s and 1850s, when over a million migrated to the U.S., primarily to escape political upheaval. Once here, these immigrants made important contributions to American society.he majority of German immigrants settled in the rural Midwest, but they also established the town of New Braunfels, Texas, and its surrounding areas in 1845. They also built ethnic enclaves in the Midwest metropolises of Milwaukee and Chicago. Many Germans were farmers, bringing with them their Old World practices.