How did the incas control their huge empire without modern methods of communication? a. a system of roads and government buildings existed along the 2,000 mile long empire. b. professional couriers ran messages in a relay system. c. birds with messages tied to them were trained to deliver important information. d. they had a system of signals along the mountains in which they lived.

A. A system of roads and government buildings existed along the 2,000 mile long empire.

well the lessons we can learn is how quickly our fragile freedoms can be overcome. mccarthy rose to power in 1950 of a tsunami of anti-communist hysteria, brandishing a lost of "known communists" in the state department, and held public trials to enhance his political clout. he had fallen from power but only when his attacks were against the u.s. army broadcast to millions of americans to their homes exposing his indecent persecution of the innocence of people. the senate censured him in december 1954 disgraced and discredited, he had died three years later at the age of 47..i hope my answer has you.. good day to you..

the supreme court can hear any case it wishes as long as four justices agree to hear it.

hope this , give me brainliest answer =j