The G.I Bill Improved education and training which led to improved worker productivity. This improved work productivity combined with the National Labor Relations Act of 1935 allowed worker's to receive an income high enough to place them in the middle class. Now that couples and returning service men and women could afford to have a family, society entered a time called the Baby Boom. With a sudden increase in the population, both the service men pulled into cities for education and training and new families needed places to live. New construction of suburbs began and the need for new roads and highways arose. Eisenhower, who had been an advocate for a new travel system invested in the Interstate Highway System, which helped connect newly built suburbs to cities and allowed for the quick transport of troops during war time.