section_path: History/Commonwealth and World War II (1935–1946)
section_name: Commonwealth and World War II (1935–1946)
paragraph_text: Commonwealth and World War II (1935–1946)
  
  Cultural developments in the Philippines strengthened a national identity, and Tagalog began to take precedence over other local languages. Governmental functions were gradually given to Filipinos by the Taft Commission; the 1934 Tydings–McDuffie Act granted a ten-year transition to independence through the creation of the Commonwealth of the Philippines the following year, with Manuel Quezon president and Sergio Osmeña vice president. Quezon's priorities were defence, social justice, inequality, economic diversification, and national character. Filipino (a standardized variety of Tagalog) became the national language, women's suffrage was introduced, and land reform was considered.
  
  The Empire of Japan invaded the Philippines in December 1941 during World War II, and the Second Philippine Republic was established as a puppet state governed by Jose P. Laurel. Beginning in 1942, the Japanese occupation of the Philippines was opposed by large-scale underground guerrilla activity. Atrocities and war crimes were committed during the war, including the Bataan Death March and the Manila massacre. The Philippine resistance and Allied troops defeated the Japanese in 1944 and 1945. Over one million Filipinos were estimated to have died by the end of the war. On October 11, 1945, the Philippines became a founding member of the United Nations. On July 4, 1946, during the presidency of Manuel Roxas, the country's independence was recognized by the United States with the Treaty of Manila.