What effect did mass media such as radios and newspapers have on the american public

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.

Which of the following was a bold new idea expressed in the declaration of indenpendnce?

What were some reasons the russian people grew to oppose world war i? check all that apply.millions had been killed.food and supplies were running out.the tsar had been overthrown.soldiers were forced to fight.industrialization was happening too quickly.