21年

把21年韩国·中国·日本·美国发生的事放在同一条年份轴上并列。

事件0条。正文照录原始年表原文，来源见来源与许可。上下灰色行是前后2年的脉络。

韩国三国时代 (朝鲜半岛) 公元前57–660	中国汉朝公元前206–220	日本彌生時代公元前300–250	美国
本年无收录事件	本年无收录事件 22Lulin: Rebellion erupts in Nanyang 22March — Liu Xuan (later known as the Gengshi Emperor) is enthroned by the rebels 22Red Eyebrows: Xin forces are defeated by the rebels 23昆陽之戰 23Koreans raid the Lelang Commandery and take slaves 23October — Lülin rebels stormed the Weiyang Palace and killed Wang. The Gengshi Emperor ascended the throne, restoring the Han dynasty. 23January — Lulin: Xin forces are defeated by rebels 23October — Lulin: Rebels take Chang'an and kill Wang Mang; Luoyang falls soon after 23The Protectorate of the Western Regions is abandoned	本年无收录事件	1607年起收录

韩国三国时代 (朝鲜半岛) 公元前57–660

中国汉朝公元前206–220

日本彌生時代公元前300–250

美国

22Lulin: Rebellion erupts in Nanyang
22March — Liu Xuan (later known as the Gengshi Emperor) is enthroned by the rebels
22Red Eyebrows: Xin forces are defeated by the rebels
23昆陽之戰
23Koreans raid the Lelang Commandery and take slaves
23October — Lülin rebels stormed the Weiyang Palace and killed Wang. The Gengshi Emperor ascended the throne, restoring the Han dynasty.
23January — Lulin: Xin forces are defeated by rebels
23October — Lulin: Rebels take Chang'an and kill Wang Mang; Luoyang falls soon after
23The Protectorate of the Western Regions is abandoned

1607年起收录