Answer:
d. Launch of soviet satellite sputnik
Explanation:
Egyptian idk I just guessed
I'm pretty sure that the Grant's research showed finches on the Galapagos Islands
When he went to Milan, the Duke Sforza appointed him to be a military engineer where he had to design weapons and technological advancements that would help the duke gain warfare supremacy against enemies. He also built buildings and defenses, not just offensive weapons.