The Fall of Saigon and end of the Vietnam War prompted the start of the Vietnamese diaspora, which saw millions of Vietnamese fleeing the country from the new communist regime. Recognizing an international humanitarian crisis, many countries accepted Vietnamese refugees, primarily the United States, France, Australia and Canada. Meanwhile, under the new communist regime, tens of thousands of Vietnamese were sent to work or study in Eastern Bloc counties of Central and Eastern Europe as development aid to the Vietnamese government and for migrants to acquire skills that were to be brought home to help with development. However, after the fall of the Berlin Wall, a vast majority of these overseas Vietnamese decided to remain in their host nations.