Once they took that possibility into consideration, it became clear there had been at least three migrations from Asia to America and at least one back to Asia, contributing Native American genes to the Naukan and Chukchi people of northeastern Siberia.
http://news.harvard.edu/gazette/story/2012/07/mystery-of-native-americans-arrival/
The return of some Native Americans to Asia was revealed only as researchers struggled to understand their data, Reich said. Early results clearly indicated the migration of First Americans along the coast to South America, but the results for North America were more complex.
http://news.harvard.edu/gazette/story/2012/07/mystery-of-native-americans-arrival/
Map Collections 1500-2004. When European settlers arrived on the North American continent at the end of the fifteenth century, they encountered diverse Native American culturesas many as 900,000 inhabitants with over 300 different languages.
http://loc.gov/teachers/classroommaterials/presentationsandactivities/presentations/immigration/native_american.html
The work was further complicated by multiple genetic changes in native peoples since 1492, when the continents’ conquest and settlement by Europeans began, followed by the arrival of African slaves and of later immigrants.
http://news.harvard.edu/gazette/story/2012/07/mystery-of-native-americans-arrival/
Although many new immigrants came in pursuit of a dream, nearly all the Irish immigrants from the 1840's and 1850's came to escape a nightmare-a devastating famine back home. As one immigrant recalled, I saw the crop.
http://libertyellisfoundation.org/immigration-timeline
“The Americas are, of course, an important region of the world,” said Reich. “The native peoples of America have a fascinating and contentious history. It’s very important to understand how people first got here and how people dispersed within the Americas.”.
http://news.harvard.edu/gazette/story/2012/07/mystery-of-native-americans-arrival/
Among the early British settlers were indentured servants willing to trade four to seven years of unpaid labor for a one-way ticket to the colonies and the promise of land. There were also convicts among the newcomers-up to 50,000 transported to the colonies from English jails.
http://libertyellisfoundation.org/immigration-timeline
For the issue of crime, New York organized the first full time police force in 1844. Due to the low water supply in many cities and the buildings' wooden structure, fires were huge Juggernauts for the cities. However in 1853, Cincinnati, Ohio was the first city in the country to establish a fire department. Later on the automatic water sprinkler was invented and buildings' wooden structure was replaced with brick, concrete and stone structures.
https://quizlet.com/9958037/immigration-ch-15-section-2-flash-cards/
Research conducted by an international team led by scientists from Harvard University and University College London illuminates the roots of today’s Native Americans through genetic analysis and by comparison with native groups in Siberia.
http://news.harvard.edu/gazette/story/2012/07/mystery-of-native-americans-arrival/
Most scientists believe that human beings first came to America over the Bering Straits about 20,000 years ago. These were the ancestors of the many Native American cultures, which would people the landscape for thousands of years. Around the year 1000, a small number of Vikings would arrive. Five hundred years later, the great European migration would begin.
http://libertyellisfoundation.org/immigration-timeline
what happened to the native americans when immigrants arrived
When European settlers arrived on the North American continent at the end of the fifteenth century, they encountered diverse Native American culturesas many as 900,000 inhabitants with over 300 different languages.