The undreground railroads
Answer:
It was necessary because, it ratified in 1868 granted citizenship to all persons born or naturalized in the United States.
Main Answer:The airy settlement that we explored had been built by the Anasazi, a civilization that arose as early as 1500 B.C. Their descendants are today's Pueblo Indians, such as the Hopi and the Zuni, who live in 20 communities along the Rio Grande, in New Mexico, and in northern Arizona.
Side Answers:
Which tribes of today are the descendants of the Anasazi?
The descendants of the Anasazi are still around today, though. The Pueblo and the Hopi are two Indian tribes that are thought to be descendants of the Anasazi. The term Pueblo refers to a group of Native Americans who descended from cliff-dwelling people long ago.
Who were the Anasazi and where did they live?
The Anasazi lived in the four-corners region of North America. They had three major centralized populations in three different places: Chaco Canyon (New Mexico), Mesa Verde (Colorado), and Kayenta (Arizona). They were in this region from c. 490 AD to the 1300s AD.
Where was the Anasazi tribe located?
The heart of the Anasazi region lay across the southern Colorado Plateau and the upper Rio Grande drainage. It spanned northeastern Arizona, northwestern New Mexico, southeastern Utah and southwestern Colorado—a land of forested mountain ranges, stream-dissected mesas, arid grasslands and occasional river bottoms.
When young people migrate from a rural area which probably already is suffering from a low birthrate, this effectively eventually can create a "lack of life" in a certain place where after a decade or a few decades, a certain rural area can actually die out due to not enough young people being there anymore.