What was an effect of the decline in trade after the fall of the roman empire? a people moved to new urban areas. b small farms struggled and failed. c there was a shift to a rural society. d trade grew in other parts of europe.

C There was a shift to a rural society.

Explanation:

After the fall of roman Empire a large time of feudalism begun in Europe, where trading and commerce wasn´t as available as before, because the Roman army would protect the roads and would facilitate the transit through the great roads of commerce, after this commere became harder because of the lonely roads, and the roads were more dangerous, so the society became more rural and agricultural based.

the american rail road was the most influential and useful transportation system developed in the 1800's with steam locomotives and in the very late 1800's and early 1900's diesel electric locomotives being used to transport goods and people around the newly expanded united states!

answer; andrew jackson approved nullification by signing it into law,and john calhoun opposed it saying it was unconstitutional;