How do we know that the military administration was very effective in its early stage? explain. best answer will be marked brainliest.

the answer to fill in the blank in this question would be the word resource, it is defined as the money, material or people (since human resource is a very valuable good) that a company or a person has at disposition (meaning they can use the resource as they see fit), to be able to complete a task or achieve a goal.  

answer; the period of time known as the middle ages;

the ansseer is going to be c i think