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
  URL	ct.moreover.com/?a=50403319427&p=1gw&v=1&x=0LCb1Kwu9KpwxJFkt-O6_g
  Persons	Philip Arnold