Can you help me with these unanswered questions?

4. Machu Picchu was of multi-purpose: it was a royal retreat, a religious sanctuary, and a sacred place, all in one “city in the sky.” emperor Pachacuti and his royal court.

6. Success and failures of any kind in life were due to the influence of the gods and the Inca ancestors.

8. Proposals range from astronomical maps relevant to the agricultural calendar to indicators of sacred routes between Nazca religious sites, a common device in other ancient South American cultures.

9. The Incas has never known outsiders, therefore the spanish brought diseases and guns with horses was the main key for winning.

11. He offered them Gold and Silver

vertical merger is the term used for the joining of two or more firms involved in different stages of producing the same good or services.

explanation: