关于大韩民国如何取得朝鲜半岛主权一事
个人觉得下面这份史料值得参考
来源是联合国的大会决议还是公告之类。
http://www.un.org/documents/ga/res/3/ares3.htm
档案编号 195 (III)
日期 12 December 1948
谨摘出个人认为的重要段落
2. Declares that there has been established a lawful government
(the Government of the Republic of Korea) having effective control
and jurisdiction over that part of Korea
where the Temporary Commission was able to observe and consult
and in which the great majority of the people of all Korea reside;
that this Government is based on elections
which were a valid expression of the free will of the electorate
of that part of Korea and which were observed by the Temporary Commission;
and that this is the only such Government in Korea.
9. Recommends that Member States other nations, in established their
relations with the Government of the Republic of Korea.
其中2. 所提的 election 乃下面这段历史
https://zh.wikipedia.org/wiki/大韩民国历史
: 1945年12月，莫斯科会议确定一个由苏联和美国共同管理朝鲜半岛的5年政策。
: 然而，双方僵持在建立统一政府的问题上。
: 1947年9月，僵持不下的美国将韩国问题提交给联合国大会。
: 联大的决议是：在联合国的监管下，朝鲜半岛举行大选，
: 以此建立一个统一的政府。
(注意不是独立公投)
: 然而，北部拒绝此决议。最终，大选只在南部进行。
: 1948年5月选出制宪会议。会议通过宪法，大韩民国于法理上建立。
: 1948年8月15日，宣布大韩民国政府成立，取代运作3年的美军政府。
该维基条目的英文版是
: On August 15, 1948, the Republic of Korea was formally established,
: with Rhee Syngman as the first president.
: With the establishment of Rhee's government,
: de jure sovereignty also passed into the new government.