Ronald Reagan (1911–2004) was the 40th President of the United States, serving from 1981 to 1989. Before entering politics, Reagan was a Hollywood actor and union leader, appearing in over 50 films and serving as President of the Screen Actors Guild.

Reagan entered politics as a Democrat but became a Republican in the 1960s, citing his conservative views on government and economics. He served as Governor of California from 1967 to 1975, gaining recognition for his leadership and policies.

As president, Reagan implemented "Reaganomics," focusing on tax cuts, deregulation, and reducing government spending to stimulate economic growth. He is credited with helping to end the Cold War through his strong anti-communist stance and negotiations with Soviet leader Mikhail Gorbachev. His presidency also included the Iran-Contra affair, a significant political scandal.

Known as "The Great Communicator," Reagan was admired for his optimism, wit, and ability to connect with the American public. After leaving office, he revealed his battle with Alzheimer's disease, raising awareness about the condition. Reagan's legacy remains influential in American conservative politics and global diplomacy.