Enlargement of the United Nations members, or were dissolved. The UN officially came into existence on 24 October 1945, after ratification of the United Nations Charter by the five permanent members of the United Nations Security Council (China, France, the Soviet Union, the United Kingdom, and the United States) and a majority of the other signatories. A total of 51 original members (or founding members) joined that year; 50 of them signed the Charter at the United Nations Conference on International Organization in San Francisco on 26 June 1945, while Poland, which was not represented at the conference, signed it on 15 October 1945. Below
Transportation in the San Francisco Bay Area service, three international airports, and an extensive network of roads, tunnels, and bike paths. A 2011 Brookings Institution study ranked the San Francisco MSA and the San Jose MSA sixteenth and second, respectively, on transit coverage to job access. Another nationwide study, conducted by the University of Minnesota in 2014, ranked the San Francisco MSA second and San Jose MSA tenth. Despite this, the San Francisco Bay Area remains the second most traffic-congested region in the country with a declining per capita use of public transit. In 2013, the San Francisco-Oakland-Hayward metropolitan statistical area (San Francisco MSA) had the second