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 German's naval policy was the major reason why the United States declared war on Germany. The sinking of the Lusitania was the biggest influence of American in WWI. It was so much of an influence that it was said without the sinking of the Lusitania, the United States most likely would not of entered the war.t was the assassination of Archduke Franz Firdinand that started World War I. The Americans were brought into WWI for that fact that the Germans sank some American ships, and â¦ that they wanted to protect there European Investments.