The correct answer is B) they filled a need that other inventions of the day could not.
The Telegraph, the transatlantic telegraph cable, and the telephone were important to businesses after 1850 because they filled a need that other inventions of the day could not.
What these inventions did, in reality, was to change the way people and companies communicated. Indeed they transformed the industry of communications and changed the lives of people and businesses forever. Long-distance communication became more effectively and in some cases, immediate, improving the efficiency and quality of the transmission of information.
It granted citizenship to all persons born or naturalized in the United States including former slaves, and guaranteed all citizens “ equal protection of the laws”
