Bell's telephone and the transcontinental telegraph greatly aided business transactions.
a. true
b. false

The correct answer is true.  

It is true that Bell’s telephone and the transcontinental telegraph greatly added business transactions.

Alexander Graham Bell (1847-1922) was an Scottish inventor that invented the telephone in 1876. The vibrations of the voice converted into an electric current traveled from the transmitter to the receiver. The transcontinental telegraph finished in October 1861, was the line that served for immediate communications in the United States because it connected the East part of the U.S, with the West in California. Both accomplishments greatly added business transactions and facilitated the transmission of information throughout the country during those years.  

they spoke with the president

explanation: