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.
The U.S. issued The Emergency Quota Act of 1921 which limited the total number of immigrants allowed into the country. It also favored immigrants from western Europe. So the change was that instead of all immigrants coming in at once, it was limited.This affected the U.S. because, simply, it caused a dramatic drop in immigration to the U.S.he Immigration Act of 1965 abolished the national-origin quotas that had been in place in the United States since the Immigration Act of 1924.