Which statements about characteristics of the inca's civilization are true?
choose all answers that are correct.
a. emperors communicated using runners from the capital city of cuzco.
b. astronomers predicted eclipses and developed a 365-day calendar.
c. scribes painted books and kept records of taxes and territories conquered.
d. the city of machu picchu was probably a retreat for nobility.

A. Emperors communicated using runners from the capital city of Cuzco.
    (YES)
B. Astronomers predicted eclipses and developed a 365-day calendar.
    (YES)
C. Scribes painted books and kept records of taxes and territories conquered.
    (They did not use books, but they kept records of taxes and territories     conquered on walls.)
D. The city of Machu Picchu was probably a retreat for nobility.
    (No, it was not Herculanium it was an average mountain village.)