Please help dushshsh many points

How was classical persia's extensive network of roads important to its civilization?

Which of the following was not an effect of westward expansion? a. native american tribes suffered confinement on reservations. b. native americans learned new techniques of irrigation. c. many native americans died from the spread of disease. d. natural resources were depleted from misuse by white settlers.

An outcome of which rerutions) resulted in conflict and a temporary return to absolute de