How did the invention of the steam locomotive and the clipper ship change the way American goods were marketed

The steam locomotive allowed for the transportation of goods at a much more rapid rate than by horse. The railroad let people know exactly where and when goods would arrive. The trains also gave the cargo a safer ride as it was much more difficult to rob a train than a horse drawn transport. As more railroads were built, products could travel farther than ever before in a timely manner. This brought down the cost of freight transport and increased profits for many businesses.

the following best describes postwar era writers in their works:

progressive

many writers,authors,novelists,poets concentrated more on social art and social writing and stayed away from political writings.