<span>The answer is B. the assassination of Archduke Franz Ferdinand in Sarajevo
Powder keg in general term is a barrel of gunpowder but it is also used figuratively to refer to the way a small event sets off something much larger. Europe already had many small conflicts but in this event Archduke Franz Ferdinand was a heir to the austrian empire so as he was killed by Sarajevo who was Serbian Austria declared war on Serbia. Serbia was an ally of Russia.So Russia declared war on Austria-Hungary, then Triple Alliance and Triple Entente kicked in, bringing the entire continent to war.</span>
His name is Aryabhata, keep in mind there are different ways to spell his name
Answer: I think it is B. Levees held back the annual floods of the Tigris and Euphrates Rivers.
Explanation:
Answer: Louis Sullivan (1856-1924)
Explanation:
Louis Sullivan was an American architect that helped the city of Chicago rebuild after the fire of 1871 that ruined the city. He is considered as the spiritual father of modern American architecture and identified with the aesthetics of early skyscraper design and he is known for using the idea that building’s function should influence its design
