Answer:
Cyrus The Great - defeated the Medes and became the first leader of the Persian Empire, created the immortals
Darius I - divided the Persian Empire into 20 provinces
Both - tolerated customs and religions of conquered people, expanded the Persian Empire by conquering surrounding lands.
Step-by-step explanation:
After Cyrus conquered Babylon he established strongest empire in the region.
Later after defeating the Medes he spread his country towards the west.
Darius continued his work and even spread the country towards the Ionian cities in Asia Minor. He ruled the vast empire, which because of its greatness was divided into 20 provinces.