Vietnamese refugees began arriving in the United States at the end of the Vietnam War in 1975. Migration from the southeast Asian country continued over the years, and Vietnamese now make up the sixth-largest immigrant group in the country. Since 1975, the United States has resettled more than 3 million refugees from around the world. Click through the gallery to learn more.
Amid economic shortages and growing dissent in their homeland, more than 125,000 Cubans arrived in crowded boats in 1980. The Mariel Boatlift, as it became known, changed forever the face of Miami.
Thousands of Salvadorans and Nicaraguans left their homes to escape the repression and violence associated with civil war. In the 1980s, Washington welcomed 400,000 Nicaraguan refugees. Far fewer Salvadorans were given asylum, although many stayed in America undocumented. In this image, a refugee woman is reunited with her son after being evacuated from her war-torn town in El Salvador in 1983.
Large-scale Haitian migration to the United States began under the dictatorship of Jean-Claude "Baby Doc" Duvalier. They arrived in crowded boats, but unlike the Cubans they were refused asylum. Washington decided they were not political refugees but economic migrants.
In the 1990s, the United States resettled large numbers of people from Bosnia-Herzegovina, the nation that was left most battered in Yugoslavia's civil war. This photo shows Bosnian Muslims evacuating a town bordering Serbia in the midst of heaving fighting in 1992.
Ethnic Albanian refugees wait in Skopje, Macedonia, to board a flight for Fort Dix, New Jersey, in 1999. They were part of an exodus of 200,000 people from war-torn Kosovo.
Many Iraqis fleeing the war took refuge in camps in Jordan. The United States has approved more than 100,000 Iraqis for resettlement; some 85,000 have already arrived.
Tens of thousands of Karen people spent protracted time in refugee camps along the Myanmar-Thailand border as a result of an insurgency against the Myanmar government. In one of the world's largest recent resettlement programs, more than 70,000 Karen found new homes in the United States from 2007 on.
In another massive resettlement program, 100,000 Bhutanese living in camps in Nepal started new lives in the United States, Canada and other nations. The refugees, who are of ethnic Nepalese origin, were stripped of their nationality in the 1990s and forced to flee their homeland.