How did bell and morse impact america? their inventions improved american communication. their idea led to the assembly line method. they developed the bessmer process.

Their inventions improved American communication.

Explanation: Their inventions improved American communication. Indeed, Alexander Graham Bell invented the first telephone in 1876. Samuel Morse invented the single-wire, electric telegraph in 1832 and the Morse code not much later. Before the invention of the telephone, the telegraph was the fastest means of communication in the world and the Morse Code became the international standard for telegraph communication.

the answer to your question is a. the salt plains

in 1811, he led an expedition, known as the george c. sibley expedition, to improve relations with the pawnee and kansa tribes, and also to locate the rumored jefferson's salt mountain

your answer would be (b)