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..
For the next three years, until June 30, 1927, the 1924 Act set the annual quota of any nationality at 2% of the number of foreign-born persons of such nationality resident in the United States in 1890. That revised formula reduced total immigration from 357,803 in 1923â24 to 164,667 in 1924â25.