Clinton adds that Bush never stopped serving even after leaving office, working on tsunami relief in Asia and within the US after Hurricane Katrina. At a time when the Cold War was ending and the influence of Soviet-style communism was withering, Bush's military and diplomatic actions firmly cast the United States as the world's leading superpower.
"With sound judgment, common sense, and unflappable leadership, President Bush guided our nation, and the world, to a peaceful and victorious conclusion of the Cold War", Trump said.
"Through his essential authenticity, disarming wit, and unwavering commitment to faith, family, and country, President Bush inspired generations of his fellow Americans to public service", Trump said in a statement.More news: Thousands march in Brussels climate change demonstration
Bush - who was born on June 12, 1924 in Milton, Massachusetts into a wealthy New England political dynasty - put his studies and career on hold to join the US Navy during World War II. "And through all that he accomplished, he remained humble, following the quiet call to service that gave him a clear sense of direction".
Brent Scowcroft, the national security adviser during George H.W. Bush's presidency, said "The world has lost a great leader" and "this country has lost one of its best".
"Hillary and I mourn the passing of President George H.W. Bush, and give thanks for his great long life of service, love and friendship", Clinton wrote.
Mulroney, whose nine years in power overlapped with Bush's four, said the last time he saw his friend was in late September, when he was in Kennebunkport, Maine, to accept the George Bush Award for Excellence in Public Service. "And he did tremendous good along the journey".More news: Michelle Obama didn’t believe America was ready for a Black President
Bush served as the 41st American President, elected in 1988 and serving one term, from 1989 to 1993. "It's a legacy of service that may never be matched, even though he'd want all of us to try, " the Obamas said.
The Obamas credited him with "expanding America's promise to new immigrants and people with disabilities".
In August 1990 he responded to Saddam Hussein's invasion of Kuwait, creating a national coalition led by the United States that liberated the oil-rich yet tiny nation but stopped short of toppling the Iraqi dictator.
Tributes quickly poured in for the 41st United States president, a decorated war pilot and onetime Central Intelligence Agency chief who also saw his son George follow in his footsteps to the Oval Office.More news: Urban Meyer, former Ute coach, to announce retirement from Ohio State Football
Despite his success on the global stage, he was denied a second term over a weak economy, losing the 1992 election to upstart Democrat Bill Clinton, a little-known governor from Arkansas. U.S. Envoy to China.