Which are characteristics of the incas? (select all that are correct.) a. the inca empire spread across large flat lands in south america. b. they built roads and rope bridges. c. they used couriers. d. they brought diamonds to the americas.

Which statements correctly identify a condition that must exist for a culture to be considered a civilization

Why do people place so much importance on washington, dc?me

What is the main difference between primary and secondary sources? a. primary sources are historical documents, and secondary sources are modern-day documents. b. primary sources are derived from museums and archives, and secondary sources are created by history students and academics. c. primary sources are found in ancient places with a rich history, and secondary sources are found in historical journals and blogs. d. primary sources are created during a particular historical era, and secondary sources are created by studying primary sources.