How did the multiplex telegraph change communication in the 1800s? it trains run on schedule and avoid collisions. it made it possible to use morse code with telegraphs. it telegraphs transmit messages at a faster rate. it allowed people to communicate using speech alone.

Which of the following was a major outcome of european imperialism in africa after the industrial revolution? o a. the area around the suez canal experienced decades of military conflict o b. africans in the belgian congo suffered forced labor and oppression o c. the discovery of rich matural resources led to african economic prosperity. o d. europeans brought disease to central africa, killing thousands.