Persia - he took over its empire.
Alexander the Great's Macedonian Empire was the largest in size before the Roman Empire, although it was very short-lived. The largest enduring Empire before Rome was the Persian Empire destroyed by Alexander.
Genghis Khan (Chinggis haan) conquered the most land in history.
Alexander the great
The most noted short term effect of Alexander the Greats reign was the unity of his empire. Before his death the empire spread from Greece to Egypt, but quickly broke apart after he died.
The Persians. Huge and cultured empire.
Alexander the Great.
Alexander the Great's Macedonian Empire was the largest in size before the Roman Empire, although it was very short-lived. The largest enduring Empire before Rome was the Persian Empire destroyed by Alexander.
Alexander the Great of Macedon
Genghis Khan (Chinggis haan) conquered the most land in history.
The Persian Empire, which Alexander captured and took over.
Other then Alexander The Great himself, one would think it most have been Darius III "The King of Kings", he was the last ruler of The Achaemenid Empire of Persia from 336 BC to 330 BC before it was conquered by Alexander The Great.
Alexander the Great conquered the Persian Empire, but he did not conquer 'most of the world' - he did not get near east Asia, he did not conquer Europe, he did not conquer most of Africa, he had never even heard of North and South America or the Pacific. Addition: The typical expression is that Alexander the Great conquered "most of the known world" meaning that the majority of the areas that he did not conquer were not civilized at that time. Further: Alexander wanted to take India, but his army refused, and is recorded to have planned on moving through Europe, with Carthage and north Africa, Italy, Sicily and Spain as targets. Even he did not think that he had conquered 'most of the known world'.
The Macedonian King who conquered the Persians after three major battles was Alexander the Great. Alexander was the son of King Philip II who united Greece under Macedonian hegemony and was planning on invading the Persian Empire (in order to free the Greeks of asia minor who were being harassed and persecuted by the Persians) but was assassinated before he could invade, passing the responsibility on to his young son, Alexander.
Most of the East and West of Europe
Alexander the Great took over the Persian Empire. After his early death his generals divided the empire into kingdoms of their own. We today call them the Hellenistic kingdoms (= like Greek).
Alexander the Great
He conquered most of the world known to him.