Option B is the right answer.
Darius is known as the King of the Persian empire. He became furious with the city-states of Greece because Athens (Greek city-state) tied up with other states to revolt against Persian rule. His anger led him to launch an armed force to defeat the Athenians. He thought his action of sending the army on the land of Athens would destroy the rebellious part of the empire. But the situation changed and the army of Darius was soon defeated in the hand of the Greek city-state in 490 B.C.
Answer:
I would consider the adoption of gun powder
Explanation:
gun powder changed the world and is still widely used today for guns, explosives and rockets.
The primary purpose of Teddy Roosevelt's fight against trusts was to show both US residents and the world that businesses were not in charge of the country–the government was.
Hope I could help!
Answer:
A new machine to clean raw cotton
Explanation:
Eli Whitney's cotton gin was one of the most useful agricultural inventions. Cotton was really difficult to separate and the cotton gin made it super efficient. Hope this helped!
