Biling a. the ability to speak english b. the ability to speak at least two languages c. living in a country with more than one official language d. passing a law requiring citizens to learn the official languageualism is

How did inca develop their road system? a) they used mortar to hold the stones together.b) they built suspension bridges over rivers. c) they mixed copper and stone together to make the blocks.d) they laid roads in the cities, not in the less densely populated deserts.