what does it tells about birthright citizenship?
Children born on United States soil, with very few exceptions, are U.S. citizens
Citizenship Clause
The Citizenship Clause has been interpreted to the effect that children born on United States soil, with very few exceptions, are U.S. citizens. 
what are some provisions of the 14th amendment The Citizenship Clause, Privileges or Immunities Clause, Due Process Clause, and Equal Protection Clause when was this amendment adopted? July 9, 1868 what do you mean by the first provision mentioned above? This clause reversed the decision that African Americans were not and could not become citizens of the United States or enjoy any of the privileges and immunities of citizenship
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Citizenship Clause [SEP] Birthright citizenship
The Citizenship Clause has been interpreted to the effect that children born on United States soil, with very few exceptions, are U.S. citizens. This type of guarantee—legally termed "jus soli", or "right of the territory"—does not exist in most of Europe, Asia or the Middle East, although it is part of English common law and is common in the Americas. (For birthright citizenship for children born abroad to US citizen parents, see "Birthright citizenship in the United States"). The “jurisdiction” requirement was considered in two Supreme Court cases. In "Elk v. Wilkins", , the Court held that Native American tribes represented independent political powers with no allegiance to the United States, and that their peoples were under a special jurisdiction of the United States.