What is the "Doctrine of Discovery" that the Vatican repudiated more than 500 years later (and how was it used to justify the colonization of America)?

Media coverage

• Title	What is the "Doctrine of Discovery" that the Vatican repudiated more than 500 years later (and how was it used to justify the colonization of America)?
  Media name/outlet	CE Noticias Financieras English
  Country/Territory	United States
  Date	3/31/23
  Persons	Philip Arnold