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Yugoslavia was the country that Monica Seles represented as a teenager. Seles, a renowned tennis player, was born in Novi Sad, Yugoslavia (now Serbia), in 1973. She began her professional tennis career in 1989 at the age of 15 and quickly rose to prominence, winning multiple Grand Slam titles and becoming the world's top-ranked player. Seles continued to represent Yugoslavia until 1994 when she became an American citizen.