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|Millennium:||1st millennium BC|
|224 BC by topic|
|Gregorian calendar||224 BC|
|Ab urbe condita||530|
|Ancient Egypt era||XXXIII dynasty, 100|
|- Pharaoh||Ptolemy III Euergetes, 23|
|Ancient Greek era||139th Olympiad (victor)¹|
|Balinese saka calendar||N/A|
|Chinese calendar||丙子年 (Fire Rat)|
2473 or 2413
— to —
丁丑年 (Fire Ox)
2474 or 2414
|Coptic calendar||−507 – −506|
|Ethiopian calendar||−231 – −230|
|- Vikram Samvat||−167 – −166|
|- Shaka Samvat||N/A|
|- Kali Yuga||2877–2878|
|Iranian calendar||845 BP – 844 BP|
|Islamic calendar||871 BH – 870 BH|
|Minguo calendar||2135 before ROC|
|Seleucid era||88/89 AG|
|Thai solar calendar||319–320|
−97 or −478 or −1250
— to —
−96 or −477 or −1249
Year 224 BC was a year of the pre-Julian Roman calendar. At the time it was known as the Year of the Consulship of Torquatus and Flaccus (or, less frequently, year 530 Ab urbe condita). The denomination 224 BC for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
- After the Spartan King Cleomenes III takes on Pellene, Phlius and Argos, Aratus of Sicyon is forced to call upon King Antigonus III of Macedonia for assistance. Antigonus III's forces fail to pierce Cleomenes' lines near Corinth, but a revolt against Cleomenes at Argos put the Spartans on the defensive.
- The Romans, led by Consuls Gaius Atilius Regulus and Lucius Aemilius Papus, decisively defeat the coalition of Cisalpine Gallic tribes at the Battle of Telamon thus extending Roman influence over northern Italy. On the Roman side Gaius Atilius Regulus, commander of the Roman cavalry, is killed in the battle. On the Gallic side, one of the leaders, Concolitanus, is captured in battle, while the leader of the Gaesatae, Aneroëstes, kills himself when the battle is lost.
- Qin begins the invasion of Chu. Initially, the Qin generals Li Xin and Meng Tian capture several cities and defeat the Chu army.
- The Qin Prime Minister Lord Changping, who was born in Chu, incites a Chu rebellion against the Qin invaders. He and the Chu general Xiang Yan then surprise and defeat the Qin army led by Li Xin and Meng Tian in the Battle of Chengfu.
- Taking command of the Qin war effort, Wang Jian twice defeats Xiang Yan and captures Fuchu, the king of Chu, as well as the Chu capital Chen and the city of Pingyu.
- Xiang Yan retreats his forces south of the Huai River and makes Lord Changping the new king of Chu.
- Agiatis, Spartan queen
- Aneroëstes, leader of the Gallic Gaesatae (suicide)
- Dasharatha, Mauryan emperor (approximate date)
- ^ Qian, Sima. Records of the Grand Historian, Section: The First Emperor, Section: Wang Jian, Section: Meng Tian.