Title: Federalism.
Question: How long has China been with centralized power?

Title: Himachal Pradesh.
Question: What does Himachal have a rich heritage of?

Title: Capacitor.
Question: Since when have surface mount packages for capacitors been commonly in use?

Title: Indigenous peoples of the Americas.
Question:
What area of the Americas did the Inca Empire, Moche culture and Muisca confederation hail from?