本题考查雅尔塔会议。The second conference was held in Yalta in February 1945. The conference actually approved a re-division of postwar sphere of influence among the three powers and decided on the setting-up of a world organization:the United Nations.美国，前苏联和英国的领导人与1945年2月在雅尔塔举行会议，会议实际通过了战后三大国势力范围的重新划分，并决定成立一个世界组织——联合国。