I believe the number is 29.
Answer: The Printing Press
Explanation: Gutenberg made way for books to be copied mechanically, and not by hand, allowing books to become widespread for the first time.
Hey Gardneun!
In their plantations in Brazil, the Portuguese chose to grow sugarcane as it was appropriate for the climate and it was practical and efficient for the slave work. It was also a good and required item in the slave cycle (that went from Europe to Africa, Africa to South America, South America to Europe).
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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.
