Lyndon Baines Johnson became the thirty-sixth president of the United States on November 22, 1963, after the assassination of John F. Kennedy. Sworn in aboard Air Force One in Dallas, he faced an anxious nation and a pile of unfinished business. The tall Texan with a booming voice and sharp political instincts wasted little time. He had spent years in Congress learning how to twist arms and build coalitions, and now he put those skills to work. One of his first big moves was finishing what Kennedy had started on civil rights. In 1964, Johnson signed the Civil Rights Act, which banned discrimination in public places and workplaces. Getting it through a reluctant Senate took every bit of persuasion he had. He followed it the next year with the Voting Rights Act, which knocked down barriers that had kept Black Americans from the polls for generations. These laws changed the country in ways that still echo today. Johnson did not stop there. He rolled out what he called the Great Society, a sweeping set of programs meant to wipe out poverty and give every American a fair shot. Medicare and Medicaid brought health care to older folks and low-income families. New education bills poured money into schools, especially in poor areas. He created the Department of Housing and Urban Development and launched Head Start for preschool kids. Unemployment dropped, and the economy hummed along during much of his time in office. For many historians, these domestic achievements rank among the most productive bursts of lawmaking since the New Deal. Yet the shadow of Vietnam grew darker with each passing year. Johnson inherited a small military presence there, but he steadily increased American involvement. After reported attacks in the Gulf of Tonkin in 1964, Congress gave him broad powers to escalate. By 1968, more than half a million troops were fighting, and the nightly news brought images of jungle battles and rising casualties into American living rooms. Anti-war protests swelled on college campuses and city streets. The Tet Offensive early that year shook public confidence, even though military leaders called it a setback for the enemy. The pressure finally broke him. On March 31, 1968, Johnson stunned the country by announcing he would not run for another term. He spent his last months trying to start peace talks in Paris, but progress came slowly. When he left the White House in January 1969, Richard Nixon took over, and the war dragged on for years more. Looking back, Johnson's record is a study in contrasts. He pushed through laws that lifted millions out of poverty, expanded opportunity, and struck blows against legal racism. At the same time, his decisions on Vietnam cost lives, divided the nation, and damaged his reputation. He died in 1973 at his Texas ranch, but the programs he built and the debates he left behind still shape American life. In the end, he was a man who believed government could solve big problems and who proved it could, even while paying a heavy price for his mistakes.