Which of the following is an example of the presidents role as the leader of the pre-world would it be President Johnson authorized XGolf of Tonkin resolution which rapidly increased American involvement in Vietnam or President Nixon, visited China in 1972 which was the first time the US president had visited the People's Republic of China or was it President Obama hosted a reception at the White House for the Chicago Cubs after they won the World Series or was it president Truman, who played a role in farming, NATO and alliance to prevent the Soviet Union from taking over Europe
