Tell about Alexander The Great ?

Even though Alexander was the feudal king of Macedonia, he didn't obtain automatic control of the Corinthian League.

In fact, the southern states of Greece were celebrating Philip II's death and expressed divided interests.

Athens had its own agenda: Under the leadership of democratic Demosthenes, the state hoped to take charge of the league.

As they launched independence movements, Alexander sent his army south and coerced the region of Thessaly into acknowledging him as the leader of the Corinthian League.

Then during a meeting of league members at Thermopylae, Alexander elicited their acceptance of his leadership. By the fall of 336, he reissued treaties with the Greek city-states that belonged to the Corinthian League—with Athens still refusing membership—and was granted full military power in the campaign against the Persian Empire.

before preparing for war with Persia, Alexander first conquered the Thracian Triballians in 335, securing Macedonia's northern borders.

As Alexander was nearing the end of his northern campaign, he was delivered the news that Thebes, a Greek city-state, had forced out the Macedonian troops that were garrisoned there.

Fearing a revolt among the other city-states, Alexander leapt into action, marching his massive army—consisting of 3,000 cavalry and 30,000 infantry—southward all the way to the tip of the Greek peninsula. Meanwhile, Alexander's general, Parmenion, had already made his way to Asia Minor.

Alexander and his forces arrived in Thebes so quickly that the city-state didn't have a chance to pull together allies for its defense

Three days after his arrival, Alexander led the massacre of Thebes.

It was Alexander's hope that the destruction of Thebes would serve as a warning to city-states contemplating revolt. His intimidation tactic proved effective; the other Greek city-states, including Athens, chose to pledge their alliance to the Macedonian Empire or opted to remain neutral.

In 334, Alexander embarked on his Asiatic expedition, arriving in Troy that spring. Alexander then faced Persian King Darius III's army near the Grancius River; Darius' forces were swiftly defeated.

By fall, Alexander and his army had made it across the southern coast of Asia Minor to Gordium, where they took the winter to rest. In the summer of 333, the troops of Alexander and Darius once again went head to head in battle at Issus. Although Alexander's army was outnumbered, he used his flair for military strategy to create formations that defeated the Persians again and caused Darius to flee.

In November of 333, Alexander declared himself the king of Persia after capturing Darius and making him a fugitive.

Next up on Alexander's agenda was his campaign to conquer Egypt. After besieging Gaza on his way to Egypt, Alexander easily achieved his conquest; Egypt fell without resistance. In 331, he created the city of Alexandria, designed as a hub for Greek culture and commerce. Later that year, Alexander defeated the Persians at the Battle of Gaugamela.

With the collapse of the Persian army, Alexander became "King of Babylon, King of Asia, King of the Four Quarters of the World."

Alexander's next conquest was eastern Iran, where he created Macedonian colonies and in 327 seized the fortress in Ariamazes.

After capturing Prince Oxyartes, Alexander married the prince's daughter, Rhoxana.

In 328, Alexander defeated King Porus' armies in northern India. Finding himself impressed by Porus, Alexander reinstated him as king and won his loyalty and forgiveness.

Alexander forged eastward to the Ganges but headed back when his armies refused to advance any farther.

On their way back along the Indus, Alexander was wounded by Malli warriors.

In 325, after Alexander had recovered, he and his army headed north along the rugged Persian Gulf, where many fell prey to illness, injury and death. In February 324, Alexander at last reached the city of Susa.

Desperate to retain his leadership and recruit more soldiers, he tried to connect Persian nobles to Macedonians in order to create a ruling class.

To this end, at Susa he commanded that a large number of Macedonians marry Persian princesses.

After Alexander managed to recruit tens of thousands of Persian soldiers into his army, he dismissed many of his existing Macedonian soldiers.