India, May 8 -- U.S. Cardinal Robert Prevost was elected in a surprise choice to be the new leader of the Catholic Church on Thursday, taking the name Leo XIV, becoming the first American pontiff.

Pope Leo, appeared on the central balcony of St. Peter's Basilica around 70 minutes after white smoke billowed from a chimney atop the Sistine Chapel signifying the 133 cardinal electors had chosen a new leader for the 1.4 billion-member Catholic Church.

The choice of Prevost was announced by French Cardinal Dominique Mamberti with the Latin words "Habemus Papam" (We have a pope) to tens of thousands of people gathered in St. Peter's Square to hear the news.

Aged 69 and originally from Chicago, Prevost has spent most of his career as a missio...