Complex sentence: Madonna is an American singer-songwriter, actress, dancer and entrepreneur that since her debut in 1983, her contribution to music, film, fashion and dance and with her attitude has influenced many other artists in the world.
Split into simpler sentences: Madonna is an American singer-songwriter, actress, dancer, and entrepreneur. As a prominent figure within popular culture since her debut in 1983, Madonna's contribution to music, film, fashion and dance and with her attitude has influenced many other artists in the world.