Ronald Reagan was the 40th President of the United States, serving from 1981 to 1989. He was a former actor and Governor of California before being elected President. Reagan's presidency was marked by a conservative domestic agenda that included tax cuts, deregulation, and a strong stance against communism. He also oversaw a significant increase in military spending and was responsible for the Strategic Defense Initiative, which aimed to develop a missile defense system. Reagan's foreign policy was characterized by his tough stance against the Soviet Union, which he famously dubbed the "evil empire." He was widely popular among conservatives and is remembered as a transformative figure in American politics.