Final answer:
Ronald Reagan was called 'the great communicator' because of his effective use of media strategies and his ability to deliver scripted speeches. His background in the media industry helped him craft a well-received media persona.
Step-by-step explanation:
Ronald Reagan earned the nickname 'the great communicator' due to his effective use of media strategies. With a background in radio and films, his experience in the media industry allowed him to understand the power of crafting a well-crafted media persona. Reagan's ability to deliver scripted speeches and his charismatic presence in front of the camera contributed to his reputation as a skilled communicator.