Canadian Prime Minister Justin Trudeau on Monday urged Pope Francis to visit Canada to apologize to indigenous peoples for the Catholic Church's treatment of aboriginal children in schools it ran there.

Starting in the late 19th century, about 30 percent of children of Canada's native peoples, or about 150,000 children, were placed in what were known as "residential schools" in a government attempt to strip them of their traditional cultures and ancestral languages.

For over a century, the schools were government-funded but many were administered by Christian Churches, the majority by Roman Catholics.