How did the railroads impact the relationship between eastern cities and the great plains? a railroads brought settlers to cities in the east, and crops and food to farms in the great plains. b railroads brought crops and food to cities in the east, and settlers to farms in the great plains. c railroads brought settlers west, but did not bring anything east, so the relationship was not equal. d railroads brought crops and food east, but did not bring anything west, so the relationship was not equal.

20 points “the creation of a mosaic was a complicated procedure that called for careful timing and teamwork. . walls were painted with resin or tar before being covered with the first of three layers of plaster. . a sketch of the projected work was then made on the plaster to serve as a guide for the various artisans. the outermost layer of plaster, in which the pieces, or tesserae, of the mosaic would be set, was spread on only enough area to contain a day’s work. some of the tesserae—small, carefully cut fragments of colored glass, marble, and semiprecious stones—were pressed into the wet plaster so that they projected at a slight angle. the stones thereby better reflected light and imbued the finished mosaic with a shimmering life of its own.” —empires besieged: time frame a.d. 200–600 how many layers of materials were under the tiles? a. two- c. four- b. three- d. five