entertainment was as a result complemented by the Yoruba travel theatre groups, which emerged in the 1930s through 1940s; One of the most prominent were the Agbegijo and Alarinjo theatre groups, which featured theatre actors such as Duro Ladipo, Ishola Ogunmola, Lere Paimo, Oyin Adejobi, amongst others. In 1949 through 1950, the state of affairs changed a bit, with more Nigerian contents being exhibited in cinemas; with a purported drive to "Africanize" film production, the Nigerian Film Unit was established in order to decentralize colonial film production. The Colonial Film Unit, throughout the decade, exhibited health and educational films to local audiences through its mobile cinema vans. It also produced newsreels and short documentaries, depicting celebrations and colonial achievements to domestic and overseas audiences. Golden Age (late 1950s - late 1980s) After Nigeria's independence in 1960, the cinema business rapidly expanded, with new cinema houses being established. However, there came a significant influx of American, Indian, Chinese and Japanese films; posters of films from these countries were all over theatre halls and actors from these industries became very popular in Nigeria. Towards the late 1960s and into the 1970s Nigerian productions in movie houses increased gradually, especially productions from Western Nigeria, owing to former theatre practitioners such as Hubert Ogunde, Ola Balogun, Moses Olaiya, Jab Adu, Isola Ogunsola, Ladi Ladebo, Sanya Dosumu and Sadiq Balewa amongst others, transitioning into the big screen. The first fully commercial Nigerian films, shot on celluloid, were also made by these filmmakers in the 1960s. In 1972, concerned about the influx of foreign culture into Nigeria, the Indigenization Decree was issued by the then head of state Yakubu Gowon; which demands the transfer of ownership of about a total of 300 film theatres in the country from their foreign owners to Nigerians. Also, more Nigerians started playing active roles in cinema establishment as a result of this policy. This transfer also resulted in the emergence of Nigerian playwrights, screenwriters and film producers; popular literature and theatre works were adapted into motion pictures. The oil boom of 1973 through 1978 contributed immensely to the spontaneous boost of the cinema culture in Nigeria. The presence of foreign investments led to the erection of several cinema complexes. In 1976, The 5000-capacity National Arts Theatre, Iganmu was constructed in Lagos. The theatre was incorporated with two cinemas, each having a capacity of over 700 people. At this time cinema