This is a personal question, depending on personal and moral views. it is not like a maths sum where there is always one answer.
*Reagan is spelt incorrectly in the question.
Ronald Reagen was the 40th president of the USA.
The president was Ronald Reagen.
george h.w bush
1981-1989
1980..........
Ronald Reagen
He was the president and not a diplomat .
Ronald Reagan
Reagen was.
Reagan was president for eight years: 1981-89.
governor of California
Ronald Reagen