There are two main groups of the Hungarian diaspora: the first group includes those who are autochthonous to their homeland and live outside Hungary since the border changes of the post-World War I Treaty of Trianon of 1920.[2][note 1] The victorious forces redrew the borders of Hungary so that it runs through Hungarian-majority areas. As a consequence, 3.3 million Hungarians found themselves outside the new borders. Although those Hungarians are usually not included in the term "Hungarian diaspora",[3] they are listed as such in this article. The other main group is the emigrants who left Hungary at various times (such as the Hungarian Revolution of 1956). There has been some emigration since Hungary joined the EU in 2004, especially to countries such as Germany,[4] but those patterns have been less extensive than for certain other countries of Central Europe such as Poland and Slovakia.
Additionally, there is the Magyarab people, a small ethnic group located in Egypt and Sudan.[5]
Since the Great Powers who dictated the peace terms disregarded the principle of national self-determination in Hungary's case and did not draw the new borders of Hungary to follow ethnic and linguistic lines, 3.3 million ethnic Hungarians were lost to the successor states.
Hungarian communities abroad can be divided into at least two major categories. On the one hand, the so-called indigenous (autochthonous) minority communities – established as a result of border changes, mainly the new state borders set out in the Treaty of Trianon. On the other hand, diaspora communities of migratory (allochthonous) origin.
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