<Ul> <Li> War guilt </Li> <Li> Reparations <Ul> <Li> Role in the Weimar Republic's hyperinflation </Li> <Li> Dawes Plan </Li> <Li> Young Plan </Li> <Li> Lausanne Conference </Li> </Ul> </Li> <Li> Locarno Treaties </Li> <Li> Possible cause of World War II </Li> <Li> International Opium Convention </Li> </Ul> <Li> Reparations <Ul> <Li> Role in the Weimar Republic's hyperinflation </Li> <Li> Dawes Plan </Li> <Li> Young Plan </Li> <Li> Lausanne Conference </Li> </Ul> </Li> <Ul> <Li> Role in the Weimar Republic's hyperinflation </Li> <Li> Dawes Plan </Li> <Li> Young Plan </Li> <Li> Lausanne Conference </Li> </Ul> <Li> Role in the Weimar Republic's hyperinflation </Li>

Who opened and closed the meeting to sign the peace treaty