- Korean War
- Battle of Inchon
- Battle of the Pusan Perimeter
- No Gun Ri massacre
- Battle of Osan
- Battle of Taejon
- Battle of Pyongtaek
- July. The UN Security Council creates the United Nations Command under the United States to support the South. Over the following years, tens of thousands of soldiers from a number of countries fight for the South.
- Battle of Chonan
- Battle of Taegu
- Battle of Uijeongbu
- October. Chinese forces as the People's Volunteer Army under Peng Dehuai secretly enter the North.
- Battle of Sangju
- January. After months of negotiations, Stalin finally relents to Kim's requests to launch an invasion of the South, but makes it conditional on whether Kim can convince Mao to support the effort.
- (before Korean War)
- December. The Chinese retake Pyongyang.
- 6월 25일 한국 전쟁이 발발KO
- November. Chinese forces launch a massive offensive from the North, which puts the UN and ROK forces into a full retreat.
- 1948Jeju uprising
- 1948November. The South Korean National Assembly passes the National Security Law. The law has been consistently criticized for its broad scope and historical use by South Korean dictatorships to quash political resistance.
- 19487월 17일 대한민국 헌법이 공포됨
- 19489월 9일 조선민주주의인민공화국 정부 수립
- 19485월 10일 남한 총선거
- 19488월 15일 대한민국 정부 수립
- 1948May. Despite significant controversy, elections for the National Assembly are held in South Korea, and Syngman Rhee becomes its chair.
- 194810월 19일 여수·순천 사건 일어남
- 1949Mungyeong massacre
- 194926 June. Kim Ku is murdered in his home by Ahn Doo-hee. The exact motives behind the murder still remain unclear.
- 1951Battle of Kapyong
- 1951Battle of the Imjin River
- 1951Battle of Bloody Ridge
- 1951First Battle of Maryang-san
- 1951Sancheong–Hamyang massacre
- 1951Battle of Chipyong-ni
- 1951Battle of Hoengsong
- 1951Blockade of Wonsan
- 1951Battle of the Soyang River
- 1951선더볼트 작전
- 1951March. Seoul is retaken by the ROK and UN Forces.
- 1951January the UNSC votes unanimously to cease interest in the conflict, per UNSC Resolution 90.
- 1951January. The North and China take Seoul.
- 1952대한민국 지방 선거
| - Korean War
- Battle of Chamdo
- 朝鮮戰爭(1950-1953)爆發,美國派遣第七艦隊巡弋台灣海峽。陳儀在台北被處決。ZH
- 1950 Assam–Tibet earthquake
- Sino-Soviet Treaty of Friendship, Alliance and Mutual Assistance
- Land Reform Movement
- 镇压反革命运动与剿匪斗争共处决了上百万人口。
- Battle of the Ch'ongch'on River
- Battle of Unsan
- Battle of Wawon
- 月15日,中国与印度边境墨脱县发生8.6级地震,约4000人死亡。ZH
- Battle of Yiwu
- Battle of Nan'ao Island
- 月1日,《中华人民共和国婚姻法》公布施行;同日,解放军“解放海南岛”。ZH
- 月10日,《关于纠正镇压反革命活动的右倾偏向的指示》颁布,镇压反革命运动开始,1953年底基本结束,官方数据显示至少70余万或80余万人死亡,上百万人遭逮捕,而学界则估计100万-200万人遭处决。
- 月8日,毛泽东发布命令,将东北边防军组成中国人民志愿军支援北朝鲜,任命彭德怀为司令员兼政治委员;19日,中国人民志愿军渡鸭绿江入朝作战。ZH
- 月27日,中共中央書記處五大書記之一的中共中央秘書長任弼時於北京病逝。ZH
- Mass executions of political prisoners took place in the Canidrome.
- 月19日,北京市人民政府发出布告取缔一贯道及所有会道门,由此带动全国开始取缔反动会道门。ZH
- March — Landing Operation on Hainan Island: Chinese forces landed on ROC-controlled Hainan.
- Three Views Education Movement
- 月28日,中央人民政府逮捕6名涉嫌参与炮击天安门案的外国侨民。ZH
- 月29日,《中华人民共和国工会法》公布施行。ZH
- 月27日,河南宜洛矿难造成174人死亡、39人受伤,成为中华人民共和国建国以来的第一场最大安全责任事故。ZH
- 1948Siege of Changchun
- 1948Battle of Jinzhou
- 1948Battle of Jinan
- 19481948 Litang earthquake
- 1948November — Liaoshen Campaign: The last ROC garrison in Manchuria, in Yingkou, retreated in the face of a PLA advance.
- 1948蔣中正當選行憲後第一任中華民國總統,國民政府改组成立中華民國政府。金圓券風暴。上海《观察》杂志被查封。中国人民解放军通过三大战役(三大会战)重创中华民国国军,国共双方军事实力反转。
- 1948December — Huaihai Campaign: The PLA encircled an ROC army in Xuzhou.
- 1949月1日,中華人民共和國開國大典,成立「中华人民共和国中央人民政府」,改北平為北京,以作為首都。定五星红旗为国旗,《义勇军进行曲》为临时国歌。
- 1949月16日,毛泽东应召赴莫斯科,参加庆祝苏共中央总书记斯大林七十岁诞辰,并对苏联进行为期两个月的访问;21日,毛泽东等到达莫斯科,与斯大林迅速谈判。
- 1949Chinese People's Political Consultative Conference
- 1949月25日,金门战役爆发,中国人民解放军进攻失败。
- 1949Battle of Guningtou
- 1949Yangtze River Crossing campaign
- 1949October — Mao declared the establishment of the People's Republic of China (PRC).
- 1949月21日,毛澤東發表政务院人選,以周恩來為總理,兼外交部部長,中央人民政府人民革命軍事委員會主席由毛澤東兼任。
- 1949April — Chinese Civil War: The PLA conquered the ROC capital Nanjing. The ROC moved its capital to Guangzhou.
- 1949January — Chiang resigned the presidency of the Republic of China due to military failures and under pressure from his vice president Li Zongren, who succeeded him as acting president.
- 1949月,两航事件,隶属中华民国交通部的中国航空公司、中央航空运输公司的飞行员集体自英属香港驾驶12架飞机飞到中华人民共和国。
- 1949May — The ROC government imposes the 38-year martial law in Taiwan
- 1949December — The ROC moved its capital from Chengdu to Taipei.
- 1949月3日,中华人民共和国与苏维埃社会主义共和国联盟建交。
- 1949January — Pingjin Campaign: The PLA took Beijing.
- 1949月2日,苏维埃社会主义共和国联盟 (苏联)首先承認中華人民共和國。
- 1949月14日-12月,张家口爆发了鼠疫,75人死亡。
- 1949月7日,成都十二桥惨案,数十名政治犯被秘密集体枪决。
- 1951May — Representatives of the Dalai Lama of Tibet the 14th Dalai Lama and of the Central People's Government of the People's Republic of China signed the Seventeen Point Agreement for the Peaceful Liberation of Tibet, which guaranteed Tibetan autonomy within China and called for the integration of the Tibetan Army into the PLA.
- 1951Seventeen Point Agreement
- 1951East Rift Valley earthquakes
- 1951日本與美國等48國簽訂《舊金山和約》,聲明放棄對台灣、澎湖的主權。中国人民解放军进驻西藏地区。
- 1951月1日,中共中央发出《关于实行精兵简政、增产节约、反对贪污、反对浪费和反对官僚主义的决定》,“三反”运动在全国开展,于1952年10月结束。
- 1951月,辽河大水,造成6000多人死亡,辽宁、吉林两省受灾。
- 1951月26日,中国人民解放军进藏部队进驻拉萨。
- 1951月21日,《中华人民共和国惩治反革命条例》颁布。
- 1951月29日,政务院总理周恩来作题为《关于知识分子的改造问题》的报告,11月30日中共中央发出《关于在学校中进行思想改造和组织清理工作的指示》,开启了针对知识分子的思想改造运动。
- 1951月26日,政务院文化教育委员会召开第三十一次委务会议,决定成立中国文字改革研究委员会,开始筹备汉字改革。
- 1951月起,中央人民政府贸易部在北京、天津、上海、广州和沈阳5个城市建立高级消费品商店,为高阶官员和外宾特供商品,成为“友谊商店”的前身。
- 1952月1日,联合国大会第六届会议通过中华民国控告苏联的第505号决议,即《苏联违反一九四五年八月十四日中苏友好同盟条约及联合国宪章以致威胁中国政治独立与领土完整及远东和平案》。
- 1952月25日 ,“三反五反运动”结束,众多商人、资本家及其亲属自杀身亡或被迫害身亡,部分地区经济衰退,中国大陆资产阶级逐渐消亡。
- 1952Treaty of Taipei
- 1952Battle of Nanri Island
- 1952Battle of Nanpeng Archipelago
- 19521952 Damxung earthquake
- 1952月1日,成渝铁路全线正式通车,是中华人民共和国成立后建成的第一条铁路干线。
- 1952月9日,《中华人民共和国民族区域自治实施纲要》公布施行,《纲要》对民族自治地方的建立、自治机关的组成、自治机关的自治权利等问题作出规定。
- 1952月5日,荆江分洪工程正式开工,6月20日竣工。
- 1952月15日,中央人民政府决定设立国家计划委员会,国家开始直接管理企业经营活动,推行计划经济。
- 1952月26日,中共中央发出《关于首先在大中城市开展“五反”斗争的指示》,全国大中城市开展对违法资本家的“五反”运动。
- 1952刘青山、张子善被执行枪决,引发了三反五反运动的高潮。4月28日《中華民國與日本國間和平條約》在臺北簽訂。7月25日澳门关闸冲突。
- 1952月-9月,全国高等学校进行院系调整。
- 1952月31日前,苏联向中国移交长春铁路。
- 1952月,被中国官方称为“共和国反腐第一案”的“刘青山张子善案”中,刘青山与张子善因“贪污”被枪决。
- 1952月22日,全国范围内的“大肃托”运动开始。
| - Battle of Chumonchin Chan
- 19481948 Fukui earthquake
- 1948Hanshin Education Incident
- 1951Security Treaty between the United States and Japan
- 1951September — American occupation of Japan ended after the signing of the Treaty of San Francisco and Security Treaty between United States of America and the State of Japan, which became effective on 28 April 1952. It restored the sovereignty of Japan and established America-Japan alliance.
- 1952Treaty of Taipei
| - Korean War
- The comic strip Peanuts, by Charles M. Schulz, is first published
- Senator Joseph McCarthy gains power, and McCarthyism (1950–1954) begins
- McCarran Internal Security Act
- Bloody Gulch massacre
- NBC airs Broadway Open House a late-night comedy, variety, talk show through 1951. Hosted by Morey Amsterdam and Jerry Lester and Dagmar, it serves as the prototype for The Tonight Show
- Jayuya Uprising
- Failed assassination attempt by two Puerto Rican nationals on President Harry S. Truman while he was living at Blair House.
- 1948Berlin Blockade
- 1948U.S. presidential election, 1948: Harry S. Truman is elected president for a full term, Alben W. Barkley is elected vice president
- 1948Organization of American States: Alliance of North America and South America
- 1948Alger Hiss Case
- 19481948 Republican National Convention
- 1948The Texaco Star Theater, starring Milton Berle, becomes the first major successful U.S. television program; The Toast of the Town also debuts
- 1948Truman desegregates armed forces
- 1948Selective Service Act of 1948: Passed after first such act expired
- 1948January 20, 1949 – President Truman begins full term, Barkley becomes the 35th vice president
- 1949In China, Communists under Mao Zedong force Chiang Kai-shek's KMT government to retreat to Taiwan
- 1949Truman attempts to continue FDR's legacy with his Fair Deal, but most acts don't pass
- 1949Revolt of the Admirals
- 1949The first mammal, a rhesus monkey named Albert II, is launched into space in a suborbital flight
- 1949Germany divided into East and West
- 1949Soviet Union tests its first atomic bomb
- 1949Department of War becomes the Department of the Army and becomes subordinate to the new Department of Defense
- 1949North Atlantic Treaty Organization (NATO) formed
- 1951태평양 안전 보장 조약
- 1951Treaty of San Francisco
- 1951The Catcher in the Rye is published by J. D. Salinger and invigorates the rebellious youth of the period, eventually earning the title of a Classic with its profound impact.
- 1951General Douglas MacArthur fired by President Truman for comments about using nuclear weapons on China
- 1951Security Treaty between the United States and Japan
- 1951The first live transcontinental television broadcast takes place in San Francisco, California from the Japanese Peace Treaty Conference. One month later, the situation comedy I Love Lucy premieres on CBS, sparking the rise of television in the American home and the Golden Age of Television.
- 1951Mutual Security Act
- 1951See It Now, an American newsmagazine and documentary series broadcast by CBS from 1951 to 1958. It was created by Edward R. Murrow and Fred W. Friendly, Murrow being the host of the show.
- 195122nd Amendment, establishing term limits for president.
- 19521952 Kern County earthquake
- 1952The debut of the Today show on NBC, originally hosted by Dave Garroway is the fourth longest running talk show on television.
- 1952Immigration and Nationality Act
- 1952January 20, 1953 – Eisenhower becomes the 34th president and Nixon becomes the 36th vice president
- 1952In the United States presidential election, Dwight D. Eisenhower elected as president, Richard Nixon elected as vice president
- 1952ANZUS Treaty enters into force
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