Which native american group built large cities, and traded far and wide?

a. cliff dwellers
b. mound builders
c. inuit
d. plains

Which statements explain reasons why unconformities occur? check all that apply. rocks along a fault break and move. igneous rock forms at earth’s surface. rocks erode and sediment is deposited. no sediment is deposited over a long time. igneous rock forms between sedimentary layers.

Who did the first work in creating vaccines

Which were lenin’s actions before and during the russian revolution