Attempts to provide:
internal and external security;
good governance;
prosperity;
fair taxes.
The Persian Empire was established in Asia, North Africa and Eastern Europe. That makes three continents. Your other four continents were not involved.
Cyrus the Great, Cambyses and Darius the Great expanded the empire. The others maintained or lost it.
Cyrus II of Persia or Cyrus the Great was the founder of the Achaemenid Empire, the second of the four pre-Islamic Persian Empires and the largest empire in antiquity
-He built a new empire-Spread Greek culture-Conquered Persian Empire-Named cities after himself
Cyrus the Great
One dynasty which was around during the time of the Romans was the (247 BC - 224 AD) which ruled the Parthian Empire, the third of the four Persian pre-Islamic empires. Another dynasty was the Sasanian dynasty (224-651) which ruled the Sasanian Empire, the fourth pre-Islamic Persian empire.
Two of the four pre-Islamic Persian Empires were around during the Period of the Roman Empire: the Parthian Empire (247 BC-224 AD) and the Sasanian Empire (224-651)
The four kingdoms were: the Kingdom of Macedon in mainland Greece, the Kingdom of Pergamun (which the Romans later called Pergamon) in western Turkey, the Seleucid Empire. and the Ptolemaic Kingdom, or Kingdom of Egypt. The Seleucid Empire covered Syria, Lebanon, Judaea, Iraq and Persia. It then lost Persia and Iraq to the Parthian Empire a reconstructed Persian Empire.
The four different cultures of the ancient city of Sardis were Lydia, Persian, Greek and Roman. Saris was the ancient capital of the kingdom of Lydia, under both the Roman and Persian Empire.
Egypt was conquered by Cambyses II, the ruler of the Achaemenid Empire, the second of the four pre-Islamic Persian Empires
Responsible rule, leaving local government in place. Light taxes. Provision of internal and external security. Improving properity.
always