Why did trade along the silk road flourish during the time of the ham ,kushan, parthian, and roman empire

Hello there,

Why did trade along the silk road flourish during the time of the Ham ,Kushan,Parthian,and roman empire

developing new ways to produce products and utilize agriculture in their areas.

worcester v. georgia, legal case in which the u.s. supreme court on march 3, 1832, held (5–1) that the states did not have the right to impose regulations on native american land. andrew jackson refused to enforce the ruling, the decision form the basis for most subsequent indian law in the united states.