Why people are immigrating to different countries?

• For many people, immigrating from one country to another will often be a very difficult and stressful process, and can include a lot of upheaval and changes both in lifestyle and in the work that they do, but the motivating factors for immigration can often be just as important as making the move. There are as many different reasons for moving as there are immigrants, but they will usually fall under the umbrella of similar themes, which can often make a big difference to how these immigrants are accepted in the new country, and whether or not they are allowed to stay.
• One of the main reasons for immigration is poverty, especially for those looking to move from poor third world countries into the developed world. Another reason that many people will give for immigration is for economic reasons, especially in industries where some countries can be much more advanced and highly paid than others, and especially in industries that are highly paid this is a big motivating factor. An important factor in the choice of many people to move will also be for personal or health reasons. 
• Personal Opinion:
•  I personally think that people migrate to other countries because of many reasons     and they can have a  very important reason to do this, many people do it because they need to do it in that way and it can be a  solution for them. 
• The History of Margarita, Mexico 
• Margarita and her partner, Michael, left El Salvador in October 2008 seeking a better life in America. In El   Salvador, Margarita worked in a garment factory, earning five dollars a day, not enough to feed her two young children and send them to school. Like most migrants from Central America, the couple set out to travel without documents, on the roof of a freight train that would take them to the border of Mexico with the United States. On November 5, 2008, Margarita and Miguel went on the roof of a freight car in the state of Chiapas,Mexico, when the train was stopped unexpectedly and some army trucks approached the tracks. The couple jumped off the train and ran into the bushes, followed by two armed soldiers who fired several times into the air until caught.
•  My experience is that my aunt wet married with her husband and then they went to USA and they have 3  kids there. They have a great experience there and they were very happy because in USA they have a great economy and they were very stable and happy, when the kids were little they returned to Ecuador and they started to live here until now. 
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• Bibliography:
• http://www.thecivilsociety.info/reasons-for-immigration.php
• http://www.amnesty.org/es/news-and-updates/migrantes-hablan-explotacion-detencion-20091218