Which of these would best describe The effect that inventions like the telegraph steamboat and railroads had one life in early America? A) Thomas Edison was responsible for each of these new inventions B) these inventions lead to increased business productivity and economic growth. C) inventions like these call slavery to spread throughout the United States. D) these inventions made it possible for new states like Kansas and Missouri to join the union.
The answer would be B, as the others do not benefit at all.