He built up the military, and he ran up a large budget deficit. He bluffed the Soviet Union into collapse, thus ending the Cold War (and dismantled the Soviet Bloc) which if escalated would have ended the lives of countless millions, dwarfing WWI and WWII totals. Period.
He helped put an end to the Soviet Union by befriending Gorbachev, the soviet union leader.
He also convinced and challenged Gorbachev publicly to tear down the Berlin Wall.
"Tear down this wall" is now famous quote by President Ronald Reagan
Wikipedia lists some of Reagan's accomplishments if you'd like to learn more.
Ronald Reagan viewed with satisfaction the achievements of his innovation program known as the Reagan Revolution, which aimed to reinvigorate the American people and reduce their reliance upon Government.
He brought down Communism in the former USSR, lowered over bearing government tax rates , restored the military, and made people feel proud to be Americans again.
Get divorced
Strengthened the military, helped bring an end to Communism in the Soviet Union, improved the outlook of Amercian citizens.
Reagan helped end the Cold War.
He helped end cold war.
Grenada was invaded in 1983, so the US President was Ronald Reagan.
President Ronald Reagan
Ronald Reagan was nicknamed "Dutch".
The 40th President of the United States was Ronald Reagan.
Ronald Reagan was the President who ordered in invasion of Grenada in 1983.
Ronald W. Reagan served as the 40th President from 1981 to 1989.Ronald Reagan
Ronald Reagan.
Ronald Reagan
Ronald Reagan
This depends on the organization/country. See related questions.US: Ronald ReaganRonald Reagan was the 41st President of the United States from 1981 January 20 to 1989 January 20.
Ronald Reagan
Ronald Reagan