410s BC
This decade witnessed the continuing decline of the Achaemenid Empire, fierce warfare amongst the Greek city-states during the Peloponnesian War, the ongoing Warring States period in Zhou dynasty China, and the closing years of the Olmec civilization (lasting from c. 1200–400 BC) in modern-day Mexico.
| Millennium: | 1st millennium BC | 
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Events
    
    419 BC
    
 
By place
    
Greece
    
- Despite the Peace of Nicias still being in effect, Sparta's King Agis II gathers a strong army at Philus and descends upon Argos by marching at night from the north. His allied Boeotian forces fail him, but he is able to conclude a treaty with Argos.
 
By topic
    
Drama
    
- Euripides' play Andromache is performed.
 - Sophocles' play Electra is performed. The play takes its theme from The Libation Bearers by Aeschylus.
 
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Significant people
    
- Euphemus of Athens, Archon of Athens. In office 417-416 BC
 - Euripides of Athens, playwright
 - Socrates of Athens, philosopher
 - Sophocles of Athens, playwright
 - Thucydides of Athens, historian and author of the History of the Peloponnesian War
 - Hannibal Mago, King of Carthage, r. 440–406 BC
 - Weilieh, Zhou dynasty king of China, r. 425–402 BC
 - Tharrhypas, King of Epirus, r. 430–390 BC
 - Perdiccas II, King of Macedon, r. 454–413 BC
 - Archelaus I, King of Macedon, r. 413–399 BC
 - Mahapadma Nanda, King (and founder) of the Nanda Dynasty in Magadha (in Ancient India), r. c. 420–362 BC
 - Kosho, legendary Emperor of Japan, r. 475–393 BC
 - Amanineteyerike, King of Kush r. 431–405 BC
 - Darius II, King of the Achaemenid Persian Empire r. 423–404 BC
 - Amyrtaeus of Egypt, Anti-Achaemenid rebel and future Pharaoh of Egypt
 - Joiada of Judah, High-Priest of Israel, held position 433–410 BC
 - Johanan of Judah, High-priest of Israel, held position 410–371 BC
 - Malachi of Judah, prophet (according to Bible)
 - Tissaphernes of Persia, Satrap of Lydia and Caria
 - Abdemon, King of Salamis, r. 420–410 BC
 - Evagoras, King of Salamis, r. 410–374 BC
 - Pleistoanax (Agaid king r. 458–401 BC) and Agis II (Eurypontid king r. 427–400 BC), co-kings of Sparta.
 - Seuthes I, King of Thrace, r. 424–410 BC
 - Amadocus I, King of Thrace, r. 410–390 BC
 
Contemporaries of future importance
    
- Artaxerxes of Persia, Achaemenid prince and future King of Persia
 - Cyrus the Younger of Persia, Achaemenid prince and satrap
 - Plato of Athens, student of Socrates and future philosopher
 - Xenophon of Athens, soldier and future writer of Anabasis
 
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