Answer:
Achaemenid Empire.
Step-by-step explanation:
The Old Persian Empire, was the first Persian Empire to date from 520 BC to 330 BC and covered the territory of Greater Iran. At the height of power, the Achaemenid Empire stretched to about 10.7 million km², making it the largest empire in ancient history. The population of this empire at that time constituted 46% of the world's population.
The founder of the empire was Cyrus the Great, who extended it to much of the Middle East, while his successors expanded to Africa and Europe respectively, making it the first empire to spread across three continents. The territory of the empire, except Iran, included parts of present-day India and Pakistan, Central Asia, Asia Minor, Thrace, most of the Black Sea coast, Mesopotamia, northern Arabian peninsula, Levant, Syria, northeastern Africa. parts of present-day Egypt, Libya, Sudan and Ethiopia.