Final answer:
The purpose of President Ronald Reagan's statement was to call on General Secretary Gorbachev to dismantle the Berlin Wall and advocate for freedom and reunification of Germany.
Step-by-step explanation:
The purpose of President Ronald Reagan's statement "Mr. Gorbachev, tear down this wall!" was to call on General Secretary Gorbachev to dismantle the Berlin Wall. The Berlin Wall was a physical and symbolic division between East and West Germany, representing the divide between communism and democracy during the Cold War. Reagan's statement aimed to challenge the Soviet Union and advocate for freedom and the reunification of Germany.