Justin Trudeau, center, takes in a hockey game with his parents. On Monday, Oct. 19, 2015, Canadian voters reclaimed their country's liberal identity sending Justin Trudeau to the prime minister's office and ending 10 years of conservative leadership under Stephen Harper. At 43, he becomes the second youngest prime minister in Canadian history.
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Joseph Stalin, who later became the leader of the USSR, in 1902, a few years after he dropped out from seminary school.
Future Italian Prime Minister Matteo Renzi appeared on Italy's Ruota della Fortuna (Wheel of Fortune) in the early 1990s at age 19. He won the equivalent of tens of thousands of euros.
It was a beardless, rather boyish Fidel Castro who was busy raising funds for a Cuban Revolution in 1955. The scene was New York City, where Castro was a familiar figure among the city's Cuban leaders.
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Japanese Prime Minister Shinzo Abe as a child, left, with his family in 1956. His father, Shintaro Abe, was foreign minister between 1982 and 1986.
Aung San Suu Kyi, state counsellor of Myanmar, as a 6-year-old in 1951. She was awarded the Nobel Peace Prize in 1991 but has since been criticized by rights groups over her failure to speak up for minority groups.