On Monday, Pope Francis gave a speech in which he formally apologized to the indigenous population.
Both Canadian politicians and leaders of the indigenous population were present.
The Pope was careful to express shame for the abuses that the children from the indigenous population were subjected to in connection with the country's assimilation policy.
He believes that several generations have been affected.
The Pope also apologizes to the Christian people who supported the "colonialist mindset".
In 2008, the Government of Canada established a truth commission to find out what went on between the years 1831 and 1996 when an estimated 150,000 Aboriginal children were subjected to various forms of abuse in specially established boarding schools.
Over the years, the indigenous people have received an apology from several other churches involved, but there has been silence from the Catholic Church.
Last year, the remains of 215 children were found at one of the boarding schools, which put pressure on the Pope.
The system was based on the children being forcibly separated from their families to be indoctrinated in Western values through religious schools.
Both physical and sexual abuse occurred combined with consistent denial of the children's own cultures and languages.
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At this former boarding school, the remains of 215 children were found.