How did Ptolemy help Alexandria grow as a place of learning?

He was responsible for building the Museum of Alexandria.
He was an important teacher at the university in Alexandria.
He was the founder and caretaker of the Library of Alexandria.
He was the leader of the scientific community in Alexandria.

Which act of the conquistador pizarro was crucial in overthrowing the inca? a. the destruction of the ancient inca city, machu picchu b. the siege of the inca capital near the cuzco valley c. the execution of the last inca ruler, atahualpa d. the unexpected deaths of 3 million inca warriors e. the murder of former inca emperor, huascar