C. The increase in the use of coal as a source of heat and energy
Answer:
Decline in trade - shift to a rural society
Explanation:
The fall of the Roman Empire brought significant changes in the mode of rule and governance. After the fall, the empire was governed by the warrior kings. The traditional and community guidelines were given priority than the written laws. There was a drastic change in the economic stability of the empire as well. The economy inclined towards the agricultural sector as the result of the collapse of the trade. It was because of the decline in the trade that shifted the empire towards the rural society.
Bangladesh is the country of South Asia which is at the lowest elevation that is shown on the map. Bangladesh is one of the Country in South Asia which is marked by greenery and many waterways, it is located tot he east India on the Bay of Bengal. The capital of this country is Dhaka.