Title: Greece.
Question: Greek vocal music goes back how far in history?

Title: Indigenous peoples of the Americas.
Question: What is the Mayan writing system the only known pre-Columbian one to completely represent this?

Title: Bermuda.
Question: What is a major reason that Bermuda has problems with overpopulation?

Title: Kathmandu.
Question:
What art gallery is located close to the Durbarmarg Royal Palace?