What happened 480 AD

In 480 with the death of Julius Nepos, Eastern Emperor Zeno became the sole claimant to Emperor of the empire. Odoacer, now the ruler of Italy, was nominally Zeno's subordinate but acted with complete autonomy, eventually providing support to a rebellion against the Emperor.

The Etruscans took advantage of a lull in the fighting to attack the Roman camp, breaching the defenses of the reserves. However, word of the attack reached the consuls, and Manlius stationed his men around the exits to the camp, surrounding the Etruscans.

In 480 BC, Rome was rent by internal dissension, which encouraged the Veientes to take the field in the hope of breaking Roman power. They were supported by troops from other Etruscan cities.

In 480 BC, Etruria's ally Carthage was defeated by a coalition of Magna Graecia cities led by Syracuse, Sicily.

The foundation of modern East Asian martial arts and South Asian martial arts is likely facilitated by cultural exchanges of early Chinese and Indian martial arts. During the Warring States period of Chinese history (480–221 BCE) extensive development in martial philosophy and strategy emerged, as described by Sun Tzu in The Art of War (c. 350 BCE).

Gelon, the tyrant of Syracuse, defeated the Carthaginian invasion at the Battle of Himera.

In 480 BC, the first major battle of the invasion was fought at Thermopylae, where a small rearguard of Greeks, led by three hundred Spartans, held a crucial pass guarding the heart of Greece for several days. As a result, Phocis, Boeotia, and Attica were under Persian control.

The Persians were decisively defeated at sea by a primarily Athenian naval force at the Battle of Salamis.

Ten years later, a second invasion was launched by Darius' son Xerxes. The city-states of northern and central Greece submitted to the Persian forces without resistance, but a coalition of 31 Greek city-states, including Athens and Sparta, determined to resist the Persian invaders. At the same time, Greek Sicily was invaded by a Carthaginian force.