Forty-three years ago, Hungary enjoyed a few days of freedom, followed by a brutal crushing of the democratic forces by Soviet Communism. The defeat resulted in the biggest mass exodus of Hungarians since the humiliating Treaty of Trianon, signed in 1920, severely truncated the state, leaving many ethnic Hungarians living in new countries. Mass population movements and migrations are certainly nothing new to 20th-century Europe, and many peoples have had to leave their homes and homelands as a result of wars, oppressive regimes, border changes and attempts to create "nation-states". Hungarians had experienced several massive population movements. Following the end...
http://www.ce-review.org/99/19/nemes19.html