Such innovations, however, were difficult to support purely commercially, so prewar animation depended considerably on sponsorship, as animators often concentrated on making PR films for companies, educational films for the government, and eventually works of propaganda for the military. During this time, censorship and school regulations discouraged film-viewing by children, so anime that could possess educational value was supported and encouraged by the Monbusho (the Ministry of Education). This proved important for producers that had experienced obstacles releasing their work in regular theaters. Animation had found a place in scholastic, political, and industrial use.