By 1914, the US colonial government was already using films as a vehicle for information, education, propaganda and entertainment. The Bureau of Science tackled subjects designed to present an accurate picture of the Philippines before the American public, particularly the US Congress. By 1915, the best European and American films were shown in Philippine theaters. When World War I (1914–1918) choked off the production of European studios, Manila theater managers turned to US for new film products. With the variety they offered, American films quickly dominated the Philippine film market.