 Complete the following phrase:  Rayburns third and final tenure as Speaker from 1955 to 1961 was one of the greatest moments of his career. His protege Senator Lyndon B. Johnson became Majority Leader mostly thanks to Rayburn maneuvering the Senate leadership and making deals to make sure Johnson became Senate Democratic Leader. The trio of Rayburn, Eisenhower, and Johnson worked together well and passed numerous landmark bills such as the National Interstate and Defense Highways Act that established the Interstate Highway System, the National Aeronautics and Space Act that established NASA, the Federal Aviation Act of 1958 that established the FAA, the National Defense Education Act, the Colorado River Storage Project Act, the Civil Rights Act of 1957 and the Civil Rights Act of 1960, which were the first civil rights acts passed since 