Respuesta :
The answer would be B) These inventions led to increased business productivity and economic growth
I hope this helps :3
I hope this helps :3
These inventions revolutionized transportation and communications in the United States in the years before the Civil War and made it much easier for Americans to conduct business. Therefore, the best description of the effect that the telegraph, steamboat, and railroads had on early America is that these inventions led to increased business productivity and economic growth.