 In the 20th century and with the success of the Mexican Revolution some of the old colleges were reopened and the old Arts and Handcraft schools were joined to the new universities.In 1936 the National Polytechnic Institute of Mexico was created as an educational alternative for workers' sons and their families.A short time later the Regional Institutes of Technology were founded as a branch of the Polytechnic Institute in a few states of the republic, though most of them do not have any university in their own territory.