Complex sentence: One of the main events on the academic and politic life of Alfonso Caso was his appointment as Rector of the UNAM (1944-1945), and during this period he formulated the "Organic University law" in which he established the autonomy of the UNAM.
Split into simpler sentences: One of the more notable events in the academic and political life of Alfonso Caso was his appointment as Rector of the UNAM for 1944-1945. During this period he formulated the "Organic University law" in which he established the autonomy of the UNAM.