A hiatal hernia does not cause many symptoms by itself, but when a sliding hernia occurs, the abnormal location of the gastroesophageal (GE) junction above the diaphragm affects its function and stomach contents can reflux into the esophagus.
-You need to work on sentence structuring. For example, when you wrote, The immigration, as a decision maked by a person is an act that occurs, because of some factors especially in the under developed countries and the most importants causes or reasons are mainly social reasons, politic reasons and economic reasons..
The National Origins Quota of 1924, according to the Immigration Act, was the first permanent limitation on immigration into the United States and established the &quot;national origins quota system.&quot; In conjunction with the Immigration Act of 1917, it governed American immigration policy until 1952.