Edward Seaga, a former Jamaican prime minister who shaped the island's post-independence politics and cultural life, died Tuesday at 89. Seaga's death was announced on Twitter by Prime Minister Andrew Holness. Seaga, Jamaica's prime minister from 1980 until 1989, was the only remaining member of the generation of leaders who drafted the constitution when the Caribbean island gained independence from Britain in 1962. His political career began in the late 1950s and he won a parliamentary seat in 1962. He was West Kingston's representative for 40 consecutive years and held a parliamentary seat longer than anyone in Jamaica's history.