bodies responsible for the development of the -hydraul lc Infra­ structure and transportation were created ·fol I owed by the 'rgan 1- ·zatlon of the National Polytechnlcal Institute under President Cardenas. In the last twenty years, there has been a progressive creation of numerous centers for the generation. diffusion and appl lcatlon of scientific and technological know-how. For purposes of order and continuity In state actions related to science and technology, the National Council for Superior Education and Sclentlf lc Investigation was created In 1935, substituted In 1942 by the Commission to Develop and Coordinate Scientific Research, which In turn was substituted by the National Institute of Scientific Research and, lastly. by the Nat I on a I Counc II of ScIence and Technology (CONACYT). created by Law on December 29. 1970, amended by a Decree on December 27• 1974. The creation of the Counci I was the result of a study made In 1969 by the National Institute of Sclentlf lc Research with the participation of the scientific community. 11-3 155 The purposes of the CONACYT are eshb llshed In the Law that created It, among which the. following are hlghl lghted: "Article 2. To fulfill the purposes for which It was created, the National Council of Sciences and Technology wll I have the following functions: "1. To act as advisor to the Federal Executive In the planning. programming, coordination, orelntatlon. sys­ temization, promotion and direction of activities re­ lated to science and technology, their liaison with the national development and their relations with such activities In other countries. "II. To be the mandatory consulting body for agencies of the Federal Executive, decentral !zed entltltes and state owned companies, in matters rei ated to Investments or authorizations for funds allocated to sclentlf lc and technological research proJects, higher education, the 
**Analysis**
The text appears to be discussing the development of science and technology in Mexico, mentioning the creation of institutions and councils to promote and coordinate scientific research and technological development. It also highlights the importance of science and technology in national development and its relationship with other countries. This suggests that the category related to science and technology would be the most fitting.

**Category**
Science and technology