What was a major communications development in the 1990s?

In 1073, the fight over who gets to choose bishops was between pope gregory vii and king henry the iv. t or f

"the plan of removing the aboriginal people who yet remain within the settled portions of the united states . . approaches its consummation. . an extensive region . . has been assigned for their permanent residence. it has been divided into districts and allotted among them. many have already removed and others are preparing to go. . " removal of southern indians to indian territory, 1835 this passage is most closely related to a) imperialism. b) the civil war. c) westward expansion. d) the french indian war.

What were two theories put forth by marx?