Answer:
In order to maintain law and peace.
Explanation:
The central government was needed during this time because it works for the betterment of its people. Central government is necessary because it maintain law and order in the whole country. Laws are necessary for society to function. Life in a society without laws would be unsafe for the people and would decrease the speed of growth and development of the country. This central government have helped the people In Medieval Europe by providing safety and other basic needs of life.
Because they can only be seen with high density
the answer is b. i am pretty sure.
