Because the map shows a bunch of patches colored in the map witch obviously means they were expanding their territory witch means the map is highlighting how big and how much of the land they had conquered between 395 and 476 AD therefore A is the best Answer. you get what im saying. let me know if you do in the comments.
Prevalence means common and widespread. Their first objective based on the meaning of the word should be to reduce the spread of tobacco and the way it can easily be procured by people.