Who was the president during the period of Cesar chavez life?

Cesar Chavez was born on March 31, 1927, and passed away on April 23, 1993. During his lifetime, several U.S. presidents served, including Harry S. Truman, Dwight D. Eisenhower, John F. Kennedy, Lyndon B. Johnson, Richard Nixon, Gerald Ford, Jimmy Carter, Ronald Reagan, George H.W. Bush, and Bill Clinton. His activism peaked in the 1960s and 1970s, particularly during the presidencies of Johnson and Nixon, which were significant for labor rights movements.