Former U.S. Secretary of State Condoleezza Rice, left, and Hungarian Prime Minister Viktor Orban, center, greet each other after unveiling the new statue of late US President Ronald Reagan, during a centennial commemoration in Budapest, Hungary, earlier today. The 180 kilograms (400 pounds) and 2.18 meter (7 feet, 2 inches) tall bronze statue honors Reagan at the Freedom Square in central Budapest to mark his efforts to free the people of Hungary from the yoke of communism. (AP Photo/Bela Szandelszky)

Question: What was President Reagan's greatest accomplishment?