Persia was able to sustain such a large area, stretching from today's Libya to Pakistan, by maintaining internal and external security, maintaining relative prosperity, taxing lightly and establishing effective government. This was effective for two centuries until dismantled by Alexander the great and his successors.
The Persian Empie at its height was roughly the same size as the continental United States.
Very large - multi-continental.
At its largest extent, the Persian Empire reached the river Indus (in present day Pakistan). This was not always the eastern border as the size of the empire varied. Save
Yes. The Achaemenid Persian Empire at its height and the 48-States Continental United States are both roughly 8 million square kilometers.
King Darius I (the Great) 522-486 BCE.
A Persian Empire existed in various forms from ancient times until the early twentieth century when it was renamed the Empire of Iran. The Empire of Iran was replaced with the Islamic Republic of Iran in 1979. At it's greatest extent the Persian Empire under Darius the Great ruled all of modern Iran, Afghanistan, Iraq, Syria and Turkey.
About 8,000,000,000 square meters, give or take a few.
The main weakness was their size. With such a large territory it was hard to control and protect everyone
It stretched from Libya in the west, through the Middle East and Central Asia, to today's Pakistan in the east.
It's coverage, from Libya and Egypt across the Middle East to Central Asia and today's Pakistan, meant that it dominated half of Asia and the most populated part of Africa. It was also a player in the wars of the Greek city-states which abutted the Empire. It was a force for a degree of relative peace and prosperity on the area.
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.
If it is on size then it was Alexander's empire because it was so vast that it stretched from Italy to the present India(eastawards). This ws truly very vast. If on good army power and maitenance then it would be Julius Caesar's Roman Empire(after alexander). If not, probably the Persian empire.