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

Which statement best describes a significant cause of world war ii? o a. the economic boom that followed world war i allowed countries to build up huge militaries. o b. the treaty of versailles, which ended world war i, left lasting resentments in many countries. o c. the rise of imperial states in asia caused european powers to unite for their common defense. o d. the league of nations encouraged european states to form secret military alliances.