At the time of this "Great Migration" over 80 percent of the Puerto Rican population in the United States lived in New York City.
Recent conflicts and rural to urban migration that reduced the population of the region and changes in ways of life have caused a sharp decrease in the number of performers, resulting in the loss of many archaic styles and genres of solo singing.
Thanks to a combination of in-migration and people not leaving when they retire, the population of over-65s in the district has increased from 14, 500 to 19, 600 since 2001.
U.S. delegation member Anne Richard, assistant secretary of state for population, migration and refugees, thanked the Turks for providing refuge.
"It was the embassy's view, and the Department concurred, that because of their vulnerability, we should consider them for resettlement, " says a spokeswoman for the State Department's Bureau of Population, Refugees and Migration.
Ellen Sauerbrey, assistant secretary of State for Population, Refugees and Migration, has spent two days in Boise, Idaho.
The majority of the work streams take on-board the essential aspects of our future policy for population and migration.
BBC: NEWS | Europe | Guernsey | States passed population strategy
More than half the rise in the population of England and Wales was due to migration.
Migration from other parts of America means that the state's population is growing at the second-fastest rate in America.
Which means that within those years there was a net population grow of 4.6 million people through migration.
This jibes nicely with domestic migration trends and growth in the foreign-born population, both of which have been strongest in many of these same cities.
But the mass migration of newcomers, who have increased tremendously as a portion of the population, has also sparked widespread resentment among Singaporeans faced with ever greater congestion, crowding, high property prices and ever-greater competition for good jobs.
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The Houston metropolitan area, with a population of 6.1 million, experienced a net migration gain of 313, 800 new residents during the past five years.
The developing world is seeing a huge migration of people from the countryside to sprawling cities: Guatemala City's population has surged to over 2.5m today, for example.
However, the fact that immigrants eventually surpass their native-born counterparts also suggests that migration is a selective process, bringing the more ambitious or venturesome elements of a population.
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In the '90s, most of the growth in the Hispanic population was due to in-migration, but today births are the driving force, said David Drozd, research coordinator at the Center for Public Affairs Research at the University of Nebraska in Omaha.
Population growth and migration from western Europe may have driven up the frequency of people carrying haplogroup H.
Faced with the migration of these bears, Swiss authorities have the dilemma of whether to try to protect the population as a whole or a few individuals, the environment office said.
CNN: Switzerland's only wild bear is killed as a danger to humans
This is a quickly fading paradigm which has held us in its grip for hundreds if not thousands of years, and has affected every aspect of our human life from politics , economics , health and religion to population migration, wars, and scientific development.
What's more, the parts of the world where populations are growing fastest are also those most vulnerable to climate change, and a rising population will exacerbate the consequences of global warming water shortages, mass migration, declining food yields.
This argument cuts little ice with Migration Watch chairman, former diplomat Sir Andrew Green, who says the presence of a settled Romanian population in the UK is a "pull factor" that will encourage more to make the journey.
It is now clear that the migration of humans out of Africa was more complicated than previously thought, and that human history involved not just successive population splits, but also frequent mixing.
Decades of migration from the Pashtun heartland on the two sides of the Afghan-Pakistani border have turned Karachi into the largest Pashtun population center in the world, with some 5 million citizens of Pashtun origin.
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