200 BC

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Year 200 BC was a year of the pre-Julian Roman calendar. At the time it was known as the Year of the Consulship of Maximus and Cotta (or, less frequently, year 554 Ab urbe condita). The denomination 200 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.

• Antiochus III's forces continue their invasionofCoele Syria and Palestine.^{[citation needed]}
• Conquest of Armenia by the Seleucids.^{[citation needed]}

• Philip V of Macedon's fleet defeat the RhodiansatLade. His forces then advance into Pergamum, plundering Pergamese territory and attacking cities in Caria.^[1]
• The Acarnanians, with Macedonian support, invade Attica, causing Athens, which has previously maintained its neutrality, to seek help from the enemies of Philip. Attalus IofPergamum, who is with his fleetatAegina, receives an embassy from Athens asking him to come to the city for consultations. After he is told that Roman ambassadors are also in Athens, Attalus goes there in haste.^{[citation needed]}
• The Roman ambassador to Greece, Syria, and Egypt, Marcus Aemilius Lepidus deliversanultimatum to Philip V warning Macedonia not to make war on any Greek state. Philip decides to reject the Roman ultimatum and the Romans declare war on Macedon, thus starting the Second Macedonian War.^{[citation needed]}
• The Roman consul, Publius Sulpicius Galba Maximus, asks Attalus I and his fleet to meet up with the Roman fleet off the Greek Aegean coast and they conduct a naval campaign against Philip V, harassing Macedonian possessions in and along the Aegean.^{[citation needed]}

• Euthydemus I of the Greco-Bactrian Kingdom dies and is succeeded by his son Demetrius I of Bactria (approximate date).^{[citation needed]}

• The city of Tiwanaku is founded as a village near Lake Titicaca in modern Bolivia (approximate date).^{[citation needed]}
• The Early Horizon period in the Andes comes to an end as the Chavin culture vanishes and is succeeded by the Nazca culture (approximate date).^{[citation needed]}

• Chinese create a padding material.^{[citation needed]}
• The construction of the Wei-Yang Palace in the Han dynasty capital (Chang'an) begins.^{[citation needed]}
• The Han emperor Gaozu is defeated by the Xiongnu, led by Modu Chanyu, in the Battle of Baideng.^{[citation needed]}

• Alexander the Great, head from a Hellenistic copy of a statue, possibly after a 4th century BC original by Lysippos is made. It is now kept at the Archeological Museum in Istanbul, Turkey.^{[citation needed]}
• Lost-wax casting is known in China and Mesopotamia (approximate date).
• Roman artists begin attempting to produce the illusion of thin slabs of colored marble covering the walls, which are set off by actual architectural moldings and columns, in private houses. These attempts last for 120 years.^{[citation needed]}

• The first good measurement of the distance between Earth and the Sun is made by Eratosthenes (approximate date). By studying lunar eclipses, his result is roughly 150 000 000 km. The currently accepted value is 149 597 870 691 ± 30 metres.^{[citation needed]}

• This year is used as the fourth time world (Amazon Jungle) in the video game The Lost Vikings 2.^{[citation needed]}
• The TribunalinMarianne Curley's Guardians of Time Trilogy is set up near Athens.^{[citation needed]}
• Young Aphrodites (an award-winning drama film about a nomadic group of shepherds) is set in 200 BC.^{[citation needed]}

• Chao Cuo, Chinese political advisor and official (approximate date)
• Gongsun Hong, Chinese statesman and chancellor (d. 121 BC)
• Jia Yi, Chinese statesman and poet (d. 170 BC)
• Wen, Chinese emperor of the Han dynasty (d. 157 BC)

• Abdissares, king of Sophene (Armenian Kingdom) from 212 BC
• Euthydemus I, king of the Greco-Bactrian Kingdom from 223 BC (approximate date) (b. c. 260 BC)