On November 22, 1963, Lyndon Baines Johnson became the thirty-sixth president of the United States. This happened after John F. Kennedy was shot and killed. He took the oath of office on Air Force One in Dallas, where he faced a worried nation and a lot of unfinished business. The tall Texan with the loud voice and good political instincts didn't waste any time. He had spent years in Congress learning how to make deals and get people to work together, and now he used those skills. One of his first big moves was to finish what Kennedy had started on civil rights. Johnson signed the Civil Rights Act in 1964. This law made it illegal to discriminate in public places and at work. It took all of his persuasive skills to get it through a Senate that didn't want to pass it. The Voting Rights Act, which he passed the next year, got rid of barriers that had kept Black Americans from voting for generations. These laws changed the country in ways that are still felt today. Johnson didn't stop there. He started what he called the Great Society, a huge set of programs that were supposed to end poverty and give every American a fair chance. Medicare and Medicaid helped older people and families with low incomes get health care. New education laws gave schools a lot of money, especially in poor areas. He started Head Start for preschoolers and the Department of Housing and Urban Development. The economy was doing well and unemployment was low for most of his time in office. Many historians think that these domestic accomplishments are some of the most productive bursts of lawmaking since the New Deal. But the shadow of Vietnam got darker every year. There was a small American military presence there when Johnson took over, but he gradually increased it. Congress gave him a lot of power to escalate after attacks were reported in the Gulf of Tonkin in 1964. By 1968, more than half a million soldiers were fighting, and American homes saw pictures of jungle battles and rising death tolls on the nightly news. Protests against the war grew on college campuses and in cities. Even though military leaders said the Tet Offensive was a setback for the enemy, it shook people's faith in the government. The stress finally got to him. Johnson shocked the country on March 31, 1968, when he said he would not run for another term. In his last months, he tried to start peace talks in Paris, but they didn't go very far. Richard Nixon took over when he left the White House in January 1969, and the war went on for years after that. Johnson's record is a study in contrasts when you look back on it. He pushed through laws that helped millions of people get out of poverty, opened up new opportunities, and fought against legal racism. At the same time, his choices about Vietnam cost lives, split the country, and hurt his reputation. He passed away in 1973 at his Texas ranch, but the programs he created and the arguments he made still have an impact on American life. He was a man who thought the government could fix big problems, and he showed that it could, even though he had to pay a high price for his mistakes.