Joyful cheers him when Pope Francis appeared on the balcony of St. Peter's Basilica in Vatican City, dressed in a simple white robe.
Among the thousands greeting the pontiff were pilgrims from Argentina who could not contain their excitement.
"I cannot explain it, this is tremendous," said one. "This is the first time I am in Rome and to have an Argentinian pope - it's tremendous"
"We are very happy as Argentinians, I think he is a very well prepared person and we need to pray for the Holy Spirit and Jesus Christ to give him the strength to lead the Catholic church," said another.
The 76-year-old pontiff also noted that his fellow cardinals looked around the globe to find a successor for Pope Emeritus Benedict.
"Brothers and sisters, good evening." said Pope Francis. "As you know the duty of the conclave is to give Rome a bishop. It seems that my brothers cardinals went almost to the end of the world. But we are here."
The new pope, who was born in Buenos Aires to a family of Italian immigrants, spent most of his life in Argentina. After receiving a master's degree in chemistry at the University of Buenos Aires he decided to become a Jesuit. He was ordained a priest in 1969.
After years of teaching at Catholic school and seminaries and spending time counseling priests he became the new archbishop of Buenos Aires in 1998 and was made cardinal in 2001.
During the 2005 conclave that elected Pope Benedict, Cardinal Bergoglio was said the have received the second largest number of votes.
He has been known for his humble personal life and for his doctrinal conservatism. In 2010, when Argentina became the first Latin American country to legalize same-sex marriages, Cardinal Bergoglio encouraged clergy across the country to urge Catholics to protest.
He said the legislation would be harmful to the family.
He was also accused of complicity in the 1976 kidnapping of two liberal Jesuit priests under Argentina's military regime, a charge he flatly denied.
But Bergoglio was also known as a great defender of the poor. And even though he opposes homosexuality he has called for respect toward homosexuals. About 10 years ago, he also visited a hospice for victims of HIV-AIDS and kissed and washed feet of some patients there.
Latin America is home to the largest number of the world's 1.2 billion Catholics, with Brazil and Mexico having the largest Catholic populations.
Newly elected Pope Francis, Cardinal Jorge Mario Bergoglio of Argentina, appears on the balcony of St. Peter's Basilica at the Vatican, March 13, 2013.
April 4, 2005: Jorge Mario Bergoglio conducts a mass in honor of Pope John Paul II at the Buenos Aires cathedral. Bergoglio of Argentina was elected pope on March 13, 2013 to lead the Roman Catholic Church.
Crowds cheer as white smoke rises from the chimney above the Sistine Chapel in the Vatican, March 13, 2013.
White smoke rising from the chimney on the Sistine Chapel, indicating that a new pope has been elected.
Crowds cheer as white smoke rises from the chimney above the Sistine Chapel, March 13, 2013.
Nuns smile in Saint Peter's Square at the Vatican, March 13, 2013.
People crowd Saint Peter's Square to await the sight of smoke from the chimney above the Sistine Chapel.
Visitors wait in Saint Peter's Square during the second day of voting, March 13, 2013.
Black smoke rises from the chimney on the roof of the Sistine Chapel in the Vatican City indicating that no decision has been made after the first day of voting for the election of a new pope, March 12, 2013.
The crowd waits during the conclave in Saint Peter's Square at the Vatican, March 12, 2013.
A view of the balcony on the facade of Saint Peter's Basilica where the newly elected pope will make his first appearance to salute the cheering crowd, at the Vatican, March 11, 2013.
Saint Peter's Basilica at the Vatican is silhouetted during sunset in Rome, March 11, 2013.
Saint Peter's Square, seen from the dome of Saint Peter's Basilica at the Vatican.
The Roman Catholic church got its first Latin American pontiff Wednesday when a secret papal conclave elected Cardinal Jorge Mario Bergoglio as its new leader. Pope Francis is also the first from outside Europe in more than a millennium.