Cyrus II of Persia, known as Cyrus the Elder, but principally as Cyrus the Great, was the founder of the Achaemenid Empire. Although he himself would only rule for roughly 30 years, his empire would endure for over 200 years. At its largest size, under the rule of Darius I, known as Darius the Great, the Achaemenid Empire stretched from modern day Libya to Ukraine to Kazakhstan to Pakistan.
The Achaemenid Empire was overthrown by the Macedonian Empire of Alexander III of Macedon, commonly known as Alexander the Great. Although smaller in overall size compared to the Achaemenid Empire, Alexander’s armies were able to conquer the empire that took two-hundred and twenty years to build in ten.
King Eglon of Moab is attested in only a single chapter of the Book of Judges. If such a person even existed, he is known for the following: his armies seized a foreign city thirty miles away from his capital. He ruled for eighteen years. He was fat. He soiled himself when he was assassinated. He was apparently so prone to defecation, that it took his servants some time to realize he had died.